Acres of land related to land liens Acres of Land Related to Land Liens Acres of land related to land liens. Adjustments to reconcile net loss to net cash (used in) provided by operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Statistical Measurement [Domain] Statistical Measurement [Domain] RELATED PARTY TRANSACTIONS Related Party Transactions Disclosure [Text Block] Gross unrealized holding losses Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Loss, before Tax Cover [Abstract] Cover [Abstract] (Decrease) increase in cash, cash equivalents, and restricted cash Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Accrued long-term water assets included in current liabilities Accrued Long-term Water Assets Included in Current Liabilities Accrued Long-term Water Assets Included in Current Liabilities Trading Symbol Trading Symbol Unconsolidated joint ventures, ownership interest Equity Method Investment, Ownership Percentage Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] December 16, 2023 December 16, 2023 [Member] December 16, 2023 Comprehensive loss Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest All Trading Arrangements All Trading Arrangements [Member] Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Net Income [Text Block] June 16, 2023 June 16, 2023 [Member] June 16, 2023 Non-NEOs Non-NEOs [Member] Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Non-cash tenant allowance amortization Equity Method Investment, Summarized Financial Information, Tenant Allowance Amortization Equity Method Investment, Summarized Financial Information, Tenant Allowance Amortization Schedule of Components of Water Assets Disclosure of Long-Lived Assets Held-for-Sale [Table Text Block] Schedule of Stock Compensation Costs for Employee and NDSI Plans Share-Based Payment Arrangement, Cost by Plan [Table Text Block] Investment in unconsolidated joint ventures Equity Method Investments Tejon Ranch Commerce Center - Commercial Tejon Ranch Commerce Center - Commercial [Member] Tejon Ranch Commerce Center - Commercial Pay vs Performance Disclosure [Line Items] Information pretaining to assets of the business segments Segment Reporting Information, Additional Information [Abstract] Line of Credit Facility [Table] Line of Credit Facility [Table] Peer Group Total Shareholder Return Amount Peer Group Total Shareholder Return Amount Cost of purchased water (per acre-foot) Cost of Purchased Water, Area Cost of Purchased Water, Area TRCC/Rock Outlet Center, LLC TRCC/Rock Outlet Center [Member] TRCC/Rock Outlet Center [Member] Schedule of Other Liabilities Other Liabilities [Table Text Block] SERP Supplemental Employee Retirement Plan [Member] Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] Other comprehensive loss before taxes Other comprehensive loss before taxes Other Comprehensive Income (Loss), before Tax Award Timing Disclosures [Line Items] Investment, Name [Domain] Investment, Name [Domain] Other Performance Measure, Amount Other Performance Measure, Amount Portion at Fair Value Measurement Portion at Fair Value Measurement [Member] Unrealized loss on available-for-sale securities OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment, before Tax Common stock, outstanding shares (in shares) Beginning balance (in shares) Ending balance (in shares) Common Stock, Shares, Outstanding TRC-MRC 3, LLC TRC-MRC 3 LLC [Member] TRC-MRC 3 LLC [Member] Maturities and sales of marketable securities Proceeds from Sale and Maturity of Marketable Securities Gain on sale of property plant and equipment Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property Deferred income Contract with Customer, Liability, Current Plan Name [Domain] Plan Name [Domain] Water holding costs Water Holding Costs Water Holding Costs Excess tax provision (benefit) from stock-based compensation Excess Tax (Expense) Benefit From Stock-Based Compensation Excess Tax (Expense) Benefit From Stock-Based Compensation Other assets Other Assets, Noncurrent Entity Tax Identification Number Entity Tax Identification Number Costs Finite-Lived Intangible Assets, Gross Schedule of Finite-Lived Intangible Assets [Table] Intangible Asset, Finite-Lived [Table] Avek water for future delivery (in acre-feet) Long-term Water Assets, Water Contract Rights for Future Delivery (Volume) Long-term Water Assets, Water Contract Rights for Future Delivery (Volume) Retirement Plan Type [Axis] Retirement Plan Type [Axis] Money Market Funds Money Market Funds [Member] Transferable water Transferable Water [Member] Transferable water. Operating Segments Operating Segments [Member] Net cash (used in) provided by operating activities Net Cash Provided by (Used in) Operating Activities STOCK COMPENSATION - RESTRICTED STOCK AND PERFORMANCE SHARE GRANTS Stock Compensation Restricted Stock and Performance Share Grants [Text Block] Stock compensation restricted stock and performance share grants. Operating Activities Net Cash Provided by (Used in) Operating Activities [Abstract] Operating expenses Other Cost and Expense, Operating Plan Name [Axis] Plan Name [Axis] Income taxes receivable Income Taxes Receivable Total water held for future use Long-term Water Assets, Banked Water and Water Contract Rights (Volume) Long-term Water Assets, Banked Water and Water Contract Rights (Volume) Equity Components [Axis] Equity Components [Axis] Simulated Monte Carlo share price (in dollars per share) Share based Compensation Arrangement by Share based Payment Award Simulated Price Share based Compensation Arrangement by Share based Payment Award Simulated Price Award Timing Method Award Timing Method [Text Block] Total net periodic pension cost Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Trading Arrangements, by Individual Trading Arrangements, by Individual [Table] Deficit balance Distributions in Excess of Investment in Unconsolidated Joint Venture Distributions in Excess of Investment in Unconsolidated Joint Venture Entity Common Stock Shares Outstanding Entity Common Stock, Shares Outstanding Insider Trading Policies and Procedures [Line Items] Additional reimbursement funds Additional Reimbursement Funds Additional reimbursement funds. Capitalized Share-Based Payment Arrangement, Amount Capitalized Total costs and expenses Segment losses Corporate expenses Costs and expenses Costs and Expenses Adjustment to Compensation, Amount Adjustment to Compensation Amount Additional paid-in capital Additional Paid in Capital, Common Stock Payables and Accruals [Abstract] Payables and Accruals [Abstract] Compensation Amount Outstanding Recovery Compensation Amount Reconciling items: Segment Reconciliation [Abstract] East CFD East Community Facilities Districts [Member] -- None. No documentation exists for this element. -- Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table [Member] Entity Small Business Entity Small Business ACCRUED LIABILITIES AND OTHER CURRENT LIABILITIES Accounts Payable and Accrued Liabilities Disclosure [Text Block] Company Selected Measure Amount Company Selected Measure Amount Tabular List, Table Tabular List [Table Text Block] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Award Date [Axis] Award Date [Axis] Expected long-term rate of return on plan assets Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-Term Rate of Return on Plan Assets Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table [Member] Debt Securities, Available-for-sale [Line Items] Debt Securities, Available-for-Sale [Line Items] Restricted stock excluded from the calculation of dilutive net income per share (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Accrued bonus Accrued Bonuses, Current Long-term water assets (in acre-feet) Long-term Water Assets (Volume) Long-term Water Assets (Volume) Credit Facility [Domain] Credit Facility [Domain] Cash, cash equivalents, and restricted cash at beginning of period Cash, cash equivalents, and restricted cash at end of period Total cash, cash equivalents, and restricted cash Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents Amortization of discount of marketable securities Accretion (Amortization) of Discounts and Premiums, Investments Total compensation cost not yet recognized Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount Current Assets: Assets, Current [Abstract] Consolidation Items [Axis] Consolidation Items [Axis] TRC-MRC 2, LLC TRC-MRC 2 LLC [Member] TRC-MRC 2 LLC [Member] Financial Instruments Fair Value of Financial Instruments, Policy [Policy Text Block] Other comprehensive loss: Other Comprehensive Income (Loss), Net of Tax [Abstract] WRMWSD - Contracts with the Company Wheeler Ridge Maricopa Water Storage District Wheeler Ridge Maricopa Water Storage District [Member] Wheeler Ridge Maricopa Water Storage District [Member] Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Maximum performance (in shares) Performance Awards Granted with Performance Conditions, Maximum Number of Shares to be Issued, at Maximum Performance Performance Awards Granted with Performance Conditions, Maximum Number of Shares to be Issued, at Maximum Performance Service period Defined Benefit Plan, Average Service Period Defined Benefit Plan, Average Service Period Employee Stock Option Share-Based Payment Arrangement, Option [Member] Debt Securities, Available-for-sale [Table] Debt Securities, Available-for-Sale [Table] Taxes on vested stock grants Proceeds from (Payments for) Other Financing Activities Other expenses Other Expenses Comprehensive loss attributable to common stockholders Comprehensive Income (Loss), Net of Tax, Attributable to Parent Pension Plan Pension Plan [Member] Municipal notes Municipal Bonds [Member] Security Exchange Name Security Exchange Name AVEK Antelope Valley East Kern Water Agency [Member] Antelope valley east kern water agency. Schedule of Maturities, at Par, of Marketable Securities by Year Investments Classified by Contractual Maturity Date [Table Text Block] Target performance (in shares) Performance Awards Granted with Performance Conditions, Number of Shares to be Issued, at Target Performance Performance Awards Granted with Performance Conditions, Number of Shares to be Issued, at Target Performance Award Type [Axis] Award Type [Axis] Related Party Transaction [Domain] Related Party Transaction [Domain] Equity in Earnings (Loss) Equity Method Investment Summarized Financial Information, Equity In Earnings (Loss) Equity Method Investment Summarized Financial Information, Equity In Earnings (Loss) Restricted Cash Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block] Summary of stock grant activity: Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Property and equipment, net Property, Plant and Equipment, Net Total liabilities Liabilities Non-controlling interest Equity, Attributable to Noncontrolling Interest Compensation expenses Labor and Related Expense Common stock, par value per share (in dollars per share) Common Stock, Par or Stated Value Per Share Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Cost of sales Cost of sales of water Cost of Purchased Water Schedule of Available-for-Sale Securities Debt Securities, Available-for-Sale [Table Text Block] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Revolving Credit Facility Revolving Credit Facility [Member] Expiration Date Trading Arrangement Expiration Date Accrued capital expenditures included in current liabilities Change In Capital Expenditures Incurred But Not Yet Paid Change In Capital Expenditures Incurred But Not Yet Paid Tejon Ranch Commerce Center Inventory, Real Estate, Improvements, Gross Inventory, Real Estate, Improvements, Gross Investing Activities Net Cash Provided by (Used in) Investing Activities [Abstract] Goodwill and Intangible Assets Disclosure [Abstract] Goodwill and Intangible Assets Disclosure [Abstract] Total Shareholder Return Amount Total Shareholder Return Amount Common stock, issued shares (in shares) Common Stock, Shares, Issued Annual fee increase Long Term Water Assets, Purchased, Annual Fee Increase, Percent Long Term Water Assets, Purchased, Annual Fee Increase, Percent Special taxes paid Taxes, Other Entity [Domain] Entity [Domain] Equity Awards Adjustments, Footnote Equity Awards Adjustments, Footnote [Text Block] Line of credit facility Line of Credit Facility, Maximum Borrowing Capacity Revenues Revenue from Purchased Water Revenue from Purchased Water Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Water Contracts (Dudley-Ridge, Nickel and Tulare) Dudley Ridge, Nickel And Tulare Water Contracts [Member] Dudley Ridge, Nickel And Tulare Water Contracts Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Common stock, authorized shares (in shares) Common Stock, Shares Authorized Diluted shares outstanding (in shares) Weighted Average Number of Shares Outstanding, Diluted Company water bank Long-term Water Assets, Banked Water Held at Company Owned Water Bank (Volume) Long-term Water Assets, Banked Water Held at Company Owned Water Bank (Volume) August 21, 2023 August 21, 2023 [Member] August 21, 2023 MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] Total Tejon Ranch Co. stockholders’ equity Equity, Attributable to Parent Grapevine Grapevine [Member] Grapevine [Member] SWP Water Contracts State Water Project Contracts [Member] State water project contracts. Net amortization and deferral Defined Benefit Plan, Amortization of Gain (Loss) Schedule of Real Estate Schedule of Real Estate Properties [Table Text Block] Deferred income taxes Deferred Income Tax Expense (Benefit) Dudley-Ridge water purchase contract Dudley Ridge Water Rights [Member] Dudley Ridge Water Rights [Member] LONG-TERM WATER ASSETS Property, Plant and Equipment Disclosure [Text Block] Non-cash retirement plan expense Pension and Other Postretirement Benefits Cost (Reversal of Cost) Investment income Investment Income, Net Accounts receivable Accounts Receivable, after Allowance for Credit Loss, Current Schedule Of Equity Method Investment Equity Method Investee Name Axis [Domain] Schedule Of Equity Method Investment Equity Method Investee Name Axis [Domain] Schedule Of Equity Method Investment Equity Method Investee Name Axis [Domain] Consolidated joint venture, ownership interest Subsidiary, Ownership Percentage, Parent Cash and Cash Equivalents, Period Increase (Decrease) [Abstract] Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect [Abstract] Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] Document Fiscal Period Focus Document Fiscal Period Focus All Executive Categories All Executive Categories [Member] Common stock equivalents (in shares) Incremental Common Shares Attributable to Dilutive Effect of Share-Based Payment Arrangements Additional costs for future years Improvement Funds, Reimbursement Of Public Infrastructure Costs Improvement Funds, Reimbursement Of Public Infrastructure Costs Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] ASSETS Assets [Abstract] Retirement Plan Type [Domain] Retirement Plan Type [Domain] Other comprehensive loss Other comprehensive loss Other Comprehensive Income (Loss), Net of Tax Document Type Document Type Effective interest rate Debt Instrument, Interest Rate, Effective Percentage Restricted stock issuance Stock Issued During Period, Value, Restricted Stock Award, Gross Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block] Schedule of Segment Information Schedule of Segment Reporting Information, by Segment [Table Text Block] Total Shareholder Return Vs Peer Group Total Shareholder Return Vs Peer Group [Text Block] TRCC-East TRCC-East [Member] TRCC-East [Member] Restricted stock issuance (in shares) Stock Issued During Period, Shares, Restricted Stock Award, Gross Other Participating Lenders Other Participating Lenders [Member] Other Participating Lenders Investments in unconsolidated joint ventures Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures Funds invested in marketable securities Payments to Acquire Marketable Securities Schedule of Defined Benefit Plans Disclosures [Table] Defined Benefit Plan [Table] Petro Travel Plaza Holdings, LLC Petro Travel Plaza Holdings, LLC Petro Travel Holdings Llc Plaza [Member] Petro travel holdings llc plaza. Vested grants (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period Fair market value of investment securities below their cost basis Debt Securities, Available for Sale Securities, Fair Market Value Exceeds Cost Basis, by Amount Debt Securities, Available for sale securities, fair market value exceeds cost basis, by amount. Total Stockholders' Equity Parent [Member] Risk-free interest rate Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate Maximum Maximum [Member] Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] Net cost of purchased water contracts Finite-Lived Intangible Assets, Net Trade accounts payable Accounts Payable, Current Accounting Policies [Abstract] Accounting Policies [Abstract] Revenues: Revenues [Abstract] Current Fiscal Year End Date Current Fiscal Year End Date Water contracts and related costs, consulting services Related Party Transaction, Amounts of Transaction Accrued interest receivable balance Accrued Investment Income Receivable Statistical Measurement [Axis] Statistical Measurement [Axis] PEO Name PEO Name Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] Long-term Debt, Current and Noncurrent [Abstract] Long-Term Debt, Current and Noncurrent [Abstract] Loss before income tax benefit Loss from operations before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Award Type [Domain] Award Type [Domain] Name Outstanding Recovery, Individual Name Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Total water held for future use and purchased water contracts Long Term Water Assets, Contracts with Company Long Term Water Assets, Contracts with Company Non-PEO NEO Non-PEO NEO [Member] Corporate notes Corporate notes Corporate Note Securities [Member] Additional Paid-In Capital Additional Paid-in Capital [Member] Ranch operations Ranch operations Ranch Operations [Member] Ranch Operations [Member] Award Timing Predetermined Award Timing Predetermined [Flag] RETIREMENT PLANS Retirement Benefits [Text Block] Investment, Name [Axis] Investment, Name [Axis] 2027 Debt Securities, Available for Sale Securities, Excluding Accrued Interest, Maturities, Year Three, at Par Debt Securities, Available for Sale Securities, Excluding Accrued Interest, Maturities, Year Three, at Par New Accounting Pronouncements Adopted and New Accounting Pronouncements and Climate Change Related Update by SEC Effective in Future Periods New Accounting Pronouncements, Policy [Policy Text Block] Forecast Forecast [Member] Net loss per share attributable to common stockholders, diluted (in dollars per share) Earnings Per Share, Diluted Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Accumulated Depreciation Finite-Lived Intangible Assets, Accumulated Amortization Schedule of Weighted Average Number of Shares Outstanding Schedule of Weighted Average Number of Shares [Table Text Block] Counterparty Name [Domain] Counterparty Name [Domain] Name Measure Name Entity Interactive Data Current Entity Interactive Data Current Receivables, inventories, prepaids and other assets, net Increase (Decrease) in Operating Assets Accrued vacation Accrued Vacation, Current Accrued stock compensation expense Accrued Employee Benefits, Current Restatement does not require Recovery Restatement Does Not Require Recovery [Text Block] Ownership [Axis] Ownership [Axis] Retirement Benefits [Abstract] Retirement Benefits [Abstract] Balance Sheet Information Statement of Financial Position [Abstract] Stock compensation expense Share-Based Payment Arrangement, Noncash Expense Five West Parcel Llc Five West Parcel Llc [Member] Five west parcel llc. Net loss Net loss Net loss Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Income tax benefit Income tax benefit Income Tax Expense (Benefit) Interest cost Defined Benefit Plan, Interest Cost Schedule of Performance Share Grants with Performance Conditions Schedule of Share-based Payment Award, Performance Share Awards Granted, by Performance Conditions [Table Text Block] Schedule of Share-based Payment Award, Performance Share Awards Granted, by Performance Conditions [Table Text Block] Other income: Nonoperating Income (Expense) [Abstract] Stated interest rate Debt Instrument, Interest Rate, Stated Percentage Marketable securities - available-for-sale Debt Securities, Available-for-Sale, Current Corporate expenses Segment Reporting, Reconciling Item, Corporate Nonsegment [Member] (Cost)/earnings components: Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract] Non-cash investing activities Supplemental Cash Flow Information [Abstract] Total compensation cost not yet recognized, period for recognition Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition Schedule Of Equity Method Investment Equity Method Investee Name Axis [Axis] Schedule Of Equity Method Investment Equity Method Investee Name Axis [Axis] Schedule Of Equity Method Investment Equity Method Investee Name Axis Total revenues Commercial/industrial revenues Revenue from Contract with Customer, Excluding Assessed Tax TRC-MRC 1, LLC TRC-MRC 1 LLC [Member] TRC-MRC 1 LLC [Member] Total other income, net Nonoperating Income (Expense) Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] Real estate - resort/residential Resort and Residential Real Estate [Member] Resort and Residential Real Estate [Member] Decrease in outstanding amount Debt Instrument, Increase (Decrease), Net DMB DMB Pacific LLC [Member] DMB Pacific LLC [Member] Effective income tax rate Effective Income Tax Rate Reconciliation, Percent Net cash (used in) provided by investing activities Net Cash Provided by (Used in) Investing Activities Operating loss Operating Income (Loss) Other Other Employee-related Liabilities, Current Number of reportable segments Number of Reportable Segments TOTAL LIABILITIES AND EQUITY Liabilities and Equity Current liabilities Increase (Decrease) in Operating Liabilities Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] All Adjustments to Compensation All Adjustments to Compensation [Member] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Number of directors Number of Directors Number of Directors Mountain Village Tejon Mountain Village Llc [Member] Tejon mountain village llc. Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] Legal Entity [Axis] Legal Entity [Axis] Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Schedule of Long Lived Assets Held-for-sale [Table] Long-Lived Asset, Held-for-Sale [Table] Underlying Security Market Price Change Underlying Security Market Price Change, Percent Expected return on plan assets Defined Benefit Plan, Expected Return (Loss) on Plan Assets Scenario [Domain] Scenario [Domain] Individual: Individual [Axis] Related Party Transaction [Axis] Related Party Transaction [Axis] Shares withheld for taxes and tax benefit of vested shares Share-Based Payment Arrangement, Decrease for Tax Withholding Obligation Total water held for future use at cost Total cost of water held for future use Tangible Water Assets, Banked Water and Water Contract Rights Tangible Water Assets, Banked Water and Water Contract Rights Accumulated Other Comprehensive (Loss) Income AOCI Attributable to Parent [Member] Name of Property [Domain] Name of Property [Domain] Restricted cash (included in prepaid expenses and other current assets) Restricted cash Restricted Cash Inventories Inventory, Net Entity Address, State or Province Entity Address, State or Province Measurement period from entitlement achievement date Contract Termination, Incentive Fee Calculation, Measurement Period From Entitlement Achievement Date Contract Termination, Incentive Fee Calculation, Measurement Period From Entitlement Achievement Date Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] Real estate - commercial/industrial Real estate - commercial/industrial Commercial and Industrial [Member] Commercial and industrial. Statement [Line Items] Statement [Line Items] Schedule of Equity Method Investments [Line Items] Schedule of Equity Method Investments [Line Items] Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Banked water and water for future delivery Banked Water and Water for Future Delivery [Member] Banked water and water for future delivery. Mineral resources Mineral resources Mineral Resources [Member] Mineral Resources [Member] Schedule of Reconciliation of Revenues, Segment Profits (Losses) and Net Income (Loss) Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table Text Block] Defined Benefit Plan, Plan Assets, Category [Domain] Defined Benefit Plan, Plan Assets, Category [Domain] TRC-MRC 4, LLC TRC-MRC 4 LLC [Member] TRC-MRC 4 LLC Defined Benefit Plan Disclosure [Line Items] Defined Benefit Plan Disclosure [Line Items] Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] Financial Instruments [Domain] Financial Instruments [Domain] LIABILITIES AND EQUITY Liabilities and Equity [Abstract] Schedule of Components of Net Periodic Pension Cost Schedule of Net Benefit Costs [Table Text Block] Restatement Determination Date Restatement Determination Date Fair Value Estimate of Fair Value Measurement [Member] Adoption Date Trading Arrangement Adoption Date Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Related Party Transactions [Abstract] Related Party Transactions [Abstract] Long-term deferred gains Contract with Customer, Liability, Noncurrent Property, Plant and Equipment [Table] Property, Plant and Equipment [Table] Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] Business Segments [Axis] Segments [Axis] Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year [Member] Majestic Realty Co. Majestic Realty Co. [Member] Majestic Realty Co. [Member] Distribution of equity from unconsolidated joint ventures Proceeds from Equity Method Investment, Distribution, Return of Capital Exercise Price Award Exercise Price Commercial/industrial revenues and equity in earnings of unconsolidated joint ventures Revenues and Income (Loss) from Equity Method Investments Revenues and Income (Loss) from Equity Method Investments Employee 1998 Plan Stock Incentive Plan 1998 [Member] Stock incentive plan. Arrangement Duration Trading Arrangement Duration Schedule of Assumptions Used to Determine The Price of Market-Based Performance Condition Grants Schedule of Share-based Payment Award, Equity Instruments Other than Options, Valuation Assumptions [Table Text Block] Schedule of Share-based Payment Award, Equity Instruments Other than Options, Valuation Assumptions [Table Text Block] December 14, 2022 December 14, 2022 [Member] December 14, 2022 Schedule of Water Revenues and Cost of Sales Schedule of Water Revenues and Cost of Sales [Table Text Block] Schedule of Water Revenues and Cost of Sales [Table Text Block] Costs and expenses: Costs and Expenses [Abstract] Tejon Ranch Co. stockholders’ equity Equity, Attributable to Parent [Abstract] Tejon Ranch Commerce Center - Residential Tejon Ranch Commerce Center - Residential [Member] Tejon Ranch Commerce Center - Residential Name of Property [Axis] Name of Property [Axis] Area of building owned and leased Lease of Building Lease of building. Peer Group Issuers, Footnote Peer Group Issuers, Footnote [Text Block] Segments [Domain] Segments [Domain] Recharged water Long-term Water Assets, Recharged Project Water (Volume) Long-term Water Assets, Recharged Project Water (Volume) Income tax benefit related to other comprehensive loss items Income tax provision related to other comprehensive income items Other Comprehensive Income (Loss), Tax Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] All Individuals All Individuals [Member] Number of tenants Joint Venture, Number Of Tenants Joint Venture, Number Of Tenants Borrowings on line of credit Proceeds from Lines of Credit Proceeds from sale of property plant and equipment Proceeds from Sale, Real Estate, Other, Held-for-Investment PEO PEO [Member] Income Tax Disclosure [Abstract] Income Tax Disclosure [Abstract] Name Trading Arrangement, Individual Name Other loss, net Other Nonoperating Income (Expense) Consulting agreement term Related Party Transaction, Term Related Party Transaction, Term Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Real estate and improvements - held for lease, net Real estate and improvements - held for lease, net Inventory, Real Estate, Improvements Number of acres for development Development of Building Development of building. Marketable Securities, with unrealized gains Gross unrealized holding gains Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Gain, before Tax Equity in earnings of unconsolidated joint ventures, net Equity in earnings of unconsolidated joint ventures, net Equity in earnings of unconsolidated joint ventures Income (Loss) from Equity Method Investments Loss from operations before equity in earnings of unconsolidated joint ventures and income tax benefit Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest Awards Close in Time to MNPI Disclosures, Table Awards Close in Time to MNPI Disclosures [Table Text Block] Lender Name [Axis] Lender Name [Axis] Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year [Member] Related Party [Domain] Related and Nonrelated Parties [Domain] TRC-MRC 5, LLC TRC-MRC 5 LLC [Member] TRC-MRC 5 LLC Schedule of Condensed Statements of Operations and Balance Sheet Information of Consolidated and Unconsolidated Joint Ventures Schedule of Condensed Income Statement and Balance Sheet Related to Joint Ventures [Table Text Block] Schedule of condensed income statement and balance sheet related to joint ventures. Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Local Phone Number Local Phone Number Reconciliation to amounts on consolidated balance sheets: Cash and Cash Equivalents, at Carrying Value [Abstract] Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] Executive Vice President and Chief Operating Officer Management [Member] Deferred tax liability Deferred Income Tax Liabilities, Net Schedule of Equity Method Investments [Table] Equity Method Investment [Table] Expected volatility Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate Changes in operating assets and liabilities: Increase (Decrease) in Operating Capital [Abstract] PEO Total Compensation Amount PEO Total Compensation Amount Fair Value Debt Securities, Available-for-Sale, Excluding Accrued Interest Schedule of Accrued liabilities and other current liabilities Schedule of Accrued Liabilities [Table Text Block] Farming Farming and Agriculture [Member] Farming and agriculture. Defined Benefit Plan, Plan Assets, Category [Axis] Defined Benefit Plan, Plan Assets, Category [Axis] Schedule of Tangible Water Assets Tangible Water Assets [Table Text Block] Tangible Water Assets [Table Text Block] COMMITMENTS AND CONTINGENCIES Commitments and Contingencies Disclosure [Text Block] Debt Disclosure [Abstract] Debt Disclosure [Abstract] Common Stock Common Stock [Member] Measure: Measure [Axis] Long Lived Assets Held-for-sale by Asset Type [Axis] Long-Lived Asset, Held-for-Sale, Type [Axis] Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Entity Emerging Growth Company Entity Emerging Growth Company Acres of land Related Party Transaction, Area of Land Related Party Transaction, Area of Land Total stock compensation costs Share-Based Payment Arrangement, Accelerated Cost Segment Reporting [Abstract] Segment Reporting [Abstract] Supplemental executive retirement plan liability (See Note 12) Liability, Pension and Other Postretirement and Postemployment Benefits, Noncurrent Shares withheld for taxes and tax benefit of vested shares (in shares) Share-Based Payment Arrangement, Shares Withheld for Tax Withholding Obligation Entity Central Index Key Entity Central Index Key Scenario [Axis] Scenario [Axis] Revolving Line of Credit Revolving Line of Credit [Member] Revolving Line of Credit Equity Method Investments and Joint Ventures [Abstract] Equity Method Investments and Joint Ventures [Abstract] Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Tulare Lake Basin water purchase contract Tulare Lake Basin Water Rights [Member] Tulare Lake Basin Water Rights [Member] EQUITY Equity [Text Block] Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] Equity Component [Domain] Equity Component [Domain] Financial Instrument [Axis] Financial Instrument [Axis] REPORTING SEGMENTS AND RELATED INFORMATION Segment Reporting Disclosure [Text Block] Centennial Centennial Founders LLC [Member] Centennial Founders LLC Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Stock compensation APIC, Share-Based Payment Arrangement, Increase for Cost Recognition Professional Fees Professional Fees Entity Shell Company Entity Shell Company Measurement Basis [Axis] Measurement Basis [Axis] Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code West CFD West Community Facilities Districts [Member] West community facilities districts. Net investment in water assets Net investments in water assets Long Term Assets Held for Future Use or Sale Long term assets held for future use or sale. U.S. Treasury and agency notes U.S. Treasury and agency notes US Treasury and Government Short-Term Debt Securities [Member] Title Trading Arrangement, Individual Title Statement [Table] Statement [Table] Equity method investment Equity Equity Method Investment Summarized Financial Information, Investment Equity Method Investment Summarized Financial Information, Investment Total Debt Securities, Available for Sale Securities, Excluding Accrued Interest, Maturities at Par Debt Securities, Available for sale securities maturities, at par. Counterparty Name [Axis] Counterparty Name [Axis] March 13, 2024 March 13, 2024 [Member] March 13, 2024 Comprehensive loss attributable to non-controlling interests Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest Consolidation Items [Domain] Consolidation Items [Domain] Less accumulated depreciation Inventory, Real Estate, Improvements, Accumulated Depreciation Inventory, Real Estate, Improvements, Accumulated Depreciation City Area Code City Area Code Current Liabilities: Liabilities, Current [Abstract] Target share price to achieve award (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Price at Target Achievement Share-based Compensation Arrangement by Share-based Payment Award, Price at Target Achievement Revenues Segment Reporting Information, Revenue for Reportable Segment [Abstract] Percentage of building leased Percentage Of Building Leased Percentage Of Building Leased Acre-Feet Sold Long Term Water Assets, Water Sold (Volume) Long Term Water Assets, Water Sold (Volume) Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Level 1 Fair Value, Inputs, Level 1 [Member] Stockholders' Equity Note [Abstract] Stockholders' Equity Note [Abstract] Total current assets Assets, Current Summary of maturities, at par, of marketable securities Available For Sale Debt Securities, Fiscal Year Maturity [Abstract] Available for sale debt securities, fiscal year maturity. Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Reimbursement proceeds from Community Facilities District Payments for Proceeds from Other Investing Activities, Business Three Payments for (Proceeds from) Other Investing Activities, Business Three Water held for future use Long-term Water Assets, Banked Water and Water Contract Rights [Abstract] Long-term Water Assets, Banked Water and Water Contract Rights [Abstract] Tejon-Castac Water District Tejon-Castac Water District [Member] Tejon-Castac Water District [Member] INCOME TAXES Income Tax Disclosure [Text Block] Property tax payable Accrual for Taxes Other than Income Taxes, Current Retained earnings Retained Earnings (Accumulated Deficit) Schedule of Stock Grant Activity Schedule of Nonvested Share Activity [Table Text Block] Related Party Transaction [Line Items] Related Party Transaction [Line Items] General and administrative expenses General and Administrative Expense Number of types of stock grant awards Share Based Compensation Arrangement by Share Based Payment Award, Number of Award Types Share Based Compensation Arrangement by Share Based Payment Award, Number of Award Types Schedule of Components of Long-term Debt Schedule of Debt [Table Text Block] December 11, 2024 December 11, 2024 [Member] December 11, 2024 Investment in unconsolidated joint ventures Payments to Acquire Interest in Joint Venture Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Equity Awards Adjustments Equity Awards Adjustments [Member] Net cash provided by (used in) financing activities Net Cash Provided by (Used in) Financing Activities Underlying Securities Award Underlying Securities Amount Performance share grants Performance Shares [Member] MARKETABLE SECURITIES Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block] Right and share of profit and loss Equity Method Investment, Right and Share of Income and (Loss) Equity Method Investment, Right and Share of Income and (Loss) Borrowings under joint venture Equity Method Investment Summarized Financial Information, Line of Credit Facility, Maximum Borrowing Capacity Equity Method Investment Summarized Financial Information, Line of Credit Facility, Maximum Borrowing Capacity Contract renewal optional term Long Term Water Assets, Contract Renewal Optional Term Long Term Water Assets, Contract Renewal Optional Term Long-term Water Assets [Line Items] Long-term Water Assets [Line Items] Long-term Water Assets [Line Items] Credit Facility [Axis] Credit Facility [Axis] Assumptions used in determining periodic pension cost: Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract] Patronage rate Debt Instrument, Patronage Rate Debt Instrument, Patronage Rate Amendment Flag Amendment Flag Capital expenditures Capital Expenditures Capital Expenditures Cost Reported Value Measurement [Member] Entity Registrant Name Entity Registrant Name Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] Depreciation and amortization Depreciation, Depletion and Amortization Segment Operating Results Earnings (Loss) Gross Profit Current investment policy targets: Defined Benefit Plan, Plan Assets, Allocations [Abstract] Total Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member] Fair Value as of Grant Date Award Grant Date Fair Value Treasury/Corporate Notes Defined Benefit Plan, Debt Security [Member] Long Lived Assets Held-for-sale [Line Items] Long-Lived Assets Held-for-Sale [Line Items] Level 2 Fair Value, Inputs, Level 2 [Member] LINE OF CREDIT AND LONG-TERM DEBT Debt Disclosure [Text Block] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Equity: Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Recovery of Erroneously Awarded Compensation Disclosure [Line Items] Additional bond debt authorized to be sold in future Debt instrument face amount Debt Instrument, Face Amount Entity Address, Postal Zip Code Entity Address, Postal Zip Code Profit Gross Profit from Purchased Water Gross Profit from Purchased Water Restatement Determination Date: Restatement Determination Date [Axis] Title of 12(b) Security Title of 12(b) Security Issued and outstanding shares - 26,867,600 at March 31, 2025 and 26,822,768 at December 31, 2024 Common Stock, Value, Issued Number of community facility districts Number of Community Facility Districts Number of Community Facility Districts Share-based Payment Arrangement [Abstract] Share-Based Payment Arrangement [Abstract] Cash and cash equivalents Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Certificates of deposit Certificates of Deposit [Member] Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested [Member] Finite-Lived Intangible Assets [Line Items] Finite-Lived Intangible Assets [Line Items] Operating results from commercial/industrial and unconsolidated joint ventures Operating Income (Loss), Including Equity In Earnings Of Unconsolidated Joint Ventures Operating Income (Loss), Including Equity In Earnings Of Unconsolidated Joint Ventures Other Liabilities Other Liabilities [Abstract] Financing Activities Net Cash Provided by (Used in) Financing Activities [Abstract] Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested [Member] Fair Value Measurement [Domain] Fair Value Measurement [Domain] Net loss per share attributable to common stockholders, basic (in dollars per share) Earnings Per Share, Basic Equity Method Investment, Nonconsolidated Investee [Axis] Equity Method Investment, Nonconsolidated Investee [Axis] REAL ESTATE Real Estate Disclosure [Text Block] Amount paid for water contracts Operating Lease, Payments Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Contractual obligation for future water payments Contractual Obligation Other Liabilities Disclosure [Abstract] Other Liabilities Disclosure [Abstract] Ownership [Domain] Ownership [Domain] TRPFFA TRPFFA [Member] TRPFFA Aggregate Pension Adjustments Service Cost Aggregate Pension Adjustments Service Cost [Member] Current investment mix Defined Benefit Plan, Plan Assets, Actual Allocation, Percentage Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Total current liabilities Liabilities, Current Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year [Member] Weighted-average number of shares outstanding: Weighted Average Number of Shares Outstanding, Diluted [Abstract] OTHER LIABILITIES Other Liabilities Disclosure [Text Block] TOTAL ASSETS Identifiable assets Assets Assets Distribution of earnings from unconsolidated joint ventures Proceeds from Equity Method Investment, Distribution Equity Method Investment, Nonconsolidated Investee [Domain] Equity Method Investment, Nonconsolidated Investee [Domain] Revolving line of credit Revolving line-of-credit Long-Term Line of Credit Shares granted (in shares) New stock grants/additional shares due to achievement in excess of target (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period Long Lived Assets Held-for-sale, Name [Domain] Long-Lived Assets Held-for-Sale, Name [Domain] Real estate and equipment expenditures Payments to Acquire Property, Plant, and Equipment Other liabilities Total Other Liabilities, Noncurrent 2025 Debt Securities, Available for Sale Securities, Excluding Accrued Interest, Maturities Year One at Par Debt Securities, Available for sale securities maturities, year one, at par. Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount Commitments and contingencies (Note 11) Commitments and Contingencies Excess joint venture distributions and other (See Note 14) Other Sundry Liabilities, Noncurrent INVESTMENT IN UNCONSOLIDATED AND CONSOLIDATED JOINT VENTURES Equity Method Investments and Joint Ventures Disclosure [Text Block] Termination Date Trading Arrangement Termination Date BASIS OF PRESENTATION Business Description and Basis of Presentation [Text Block] Schedule of Related Party Transactions, by Related Party [Table] Related Party Transaction [Table] Discount rate Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate Revenues Revenues Revenues Nickel water purchase contract Nickel Water Rights [Member] Nickel Water Rights [Member] Entity Address, City or Town Entity Address, City or Town Debt Instrument [Axis] Debt Instrument [Axis] Debt Debt Equity Method Investment Summarized Financial Information, Borrowings Equity Method Investment Summarized Financial Information, Borrowings Segment Operating Results Segment Reporting Information, Income (Loss) before Income Taxes [Abstract] Total fair value of award Employee and Director - expensed Share-Based Payment Arrangement, Expense Net loss attributable to common stockholders Net Income (Loss) Attributable to Parent Net Income (Loss) Attributable to Parent Trading Arrangement: Trading Arrangement [Axis] Investments, Debt and Equity Securities [Abstract] Investments, Debt and Equity Securities [Abstract] Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Loss Contingencies [Table] Loss Contingencies [Table] Expired/forfeited grants (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period Schedule of Finite-Lived Intangible Assets Schedule of Finite-Lived Intangible Assets [Table Text Block] Equity Awards Adjustments, Excluding Value Reported in Compensation Table Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member] Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year [Member] Entity File Number Entity File Number Document Fiscal Year Focus Document Fiscal Year Focus TRC-DP1, LLC TRC-DP1, LLC [Member] TRC-DP1, LLC Revenue from External Customers by Products and Services [Table] Segment Reporting, Revenue from External Customer, Product and Service [Table] Non-controlling Interest Noncontrolling Interest [Member] Statement of Operations Income Statement [Abstract] Entity Address, Address Line One Entity Address, Address Line One Tejon Ranch Commerce Center Tejon Ranch Commerce Center [Member] Tejon Ranch Commerce Center [Member] Segment Reporting Information [Line Items] Revenue from External Customer [Line Items] Entity Address, Address Line Two Entity Address, Address Line Two Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Accrued liabilities and other Accrued liabilities and other Other Accrued Liabilities, Current Name Forgone Recovery, Individual Name Award Date [Domain] Award Date [Domain] Document Period End Date Document Period End Date Accrued paid personal leave Accrued Paid Personal Leave, Current Accrued Paid Personal Leave, Current Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Consulting Services Consulting Services [Member] Consulting Services Stock grants outstanding beginning of the year at target achievement (in shares) Stock grants outstanding end of period at target achievement (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number Line of Credit Facility, Lender [Domain] Line of Credit Facility, Lender [Domain] Insider Trading Arrangements [Line Items] Line of Credit Facility [Line Items] Line of Credit Facility [Line Items] Cost Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, before Allowance for Credit Loss Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Real Estate [Abstract] Real Estate [Abstract] PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount Cost of sales Cost of Revenue Purchased water contracts Purchased water contracts Long-term Water Assets, Water Contracts (Volume) Long-term Water Assets, Water Contracts (Volume) Adjustment to Compensation: Adjustment to Compensation [Axis] Rockefeller Joint Ventures Rockefeller Joint Ventures [Member] Rockefeller joint ventures. Prepaid expenses and other current assets Prepaid Expense and Other Assets, Current Net loss attributable to non-controlling interest Net Income (Loss) Attributable to Noncontrolling Interest Document Transition Report Document Transition Report Document Quarterly Report Document Quarterly Report Non-Employee Director Stock Incentive Plan Non-Employee Director Stock Incentive Plan [Member] Non-employee director stock incentive plan. Investments in water assets Payments to Acquire Other Investments Accumulated other comprehensive income Accumulated Other Comprehensive Income (Loss), Net of Tax Entity Current Reporting Status Entity Current Reporting Status Retained Earnings Retained Earnings [Member] Transferable water Long-term Water Assets, Transferrable Water (Volume) Long-term Water Assets, Transferrable Water (Volume) Pension Adjustments Service Cost Pension Adjustments Service Cost [Member] 2026 Debt Securities, Available for Sale Securities, Excluding Accrued Interest, Maturities, Year Two, at Par Debt Securities, Available for sale securities maturities, year two, at par. AgWest Farm Credit AgWest Farm Credit [Member] AgWest Farm Credit Related Party [Axis] Related and Nonrelated Parties [Axis] Common stock (in shares) Weighted Average Number of Shares Outstanding, Basic Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Total purchased water contracts Long-term Water Assets, Intangible Water Contracts (Volume) Long-term Water Assets, Intangible Water Contracts (Volume) Total equity Beginning balance, value Ending balance, value Equity (Deficit) Equity, Including Portion Attributable to Noncontrolling Interest Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Executive Category: Executive Category [Axis] Name Awards Close in Time to MNPI Disclosures, Individual Name Contract-based Intangible Assets Contract-Based Intangible Assets [Member] Real estate development (includes $124,980 at March 31, 2025 and $124,136 at December 31, 2024, attributable to CFL (Note 14)) Real estate development Inventory, Real Estate, Land and Land Development Costs Marketable Securities, with unrealized losses for less than 12 months Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss Entity Filer Category Entity Filer Category Loss Contingencies [Line Items] Loss Contingencies [Line Items] Company Selected Measure Name Company Selected Measure Name Percentage of rentable space Joint Venture, Percentage of Rentable Space Occupied Joint Venture, Percentage of Rentable Space Occupied Number of joint venture contracts Number of Joint Venture Contracts Number of joint venture contracts.