Class of Stock [Axis] Common Class C [Member] Equity Components [Axis] Common Stock [Member] Additional Paid-in Capital [Member] Retained Earnings [Member] Inventory [Axis] Green Coffee [Member] Dry Parchment Coffee [Member] Unprocessed Crops [Member] Product and Service [Axis] Sales Of Real Estate [Member] Agricultural Products And Other Sales [Member] Statistical Measurement [Axis] Maximum [Member] Related and Nonrelated Parties [Axis] Affiliated Entity [Member] Segments [Axis] Property [Member] Agriculture [Member] Property And Agriculture [Member] Corporate Segment [Member] Subsequent Event Type [Axis] Subsequent Event [Member] Cover [Abstract] Document Type Amendment Flag Amendment Description Document Registration Statement Document Annual Report Document Quarterly Report Document Transition Report Document Shell Company Report Document Shell Company Event Date Document Period Start Date Document Period End Date Document Fiscal Period Focus Document Fiscal Year Focus Current Fiscal Year End Date Entity File Number Entity Registrant Name Entity Central Index Key Entity Primary SIC Number Entity Tax Identification Number Entity Incorporation, State or Country Code Entity Address, Address Line One Entity Address, Address Line Two Entity Address, Address Line Three Entity Address, City or Town Entity Address, State or Province Entity Address, Country Entity Address, Postal Zip Code Country Region City Area Code Local Phone Number Extension Written Communications Soliciting Material Pre-commencement Tender Offer Pre-commencement Issuer Tender Offer Title of 12(b) Security No Trading Symbol Flag Trading Symbol Security Exchange Name Title of 12(g) Security Security Reporting Obligation Annual Information Form Audited Annual Financial Statements Entity Well-known Seasoned Issuer Entity Voluntary Filers Entity Current Reporting Status Entity Interactive Data Current Entity Filer Category Entity Small Business Entity Emerging Growth Company Elected Not To Use the Extended Transition Period Document Accounting Standard Other Reporting Standard Item Number Entity Shell Company Entity Public Float Entity Bankruptcy Proceedings, Reporting Current Entity Common Stock, Shares Outstanding Documents Incorporated by Reference [Text Block] Statement of Financial Position [Abstract] Assets Cash and cash equivalents Inventory Property, net Retirement plan investments Other assets, net           Total assets Liabilities Accounts payable and accrued expenses Deposits and deferred gains Deferred income taxes Other liabilities           Total liabilities Commitments and contingencies (Note 6) Equity Common equity, at 3/31/2026 and 12/31/2025   Shares authorized – Common shares unlimited,       Class C shares 52,000;Common shares issued       and outstanding 1,792,613 at 3/31/2026 and       12/31/2025, Class C shares issued and       outstanding 52,000 at 3/31/2026 and 12/31/2025 Additional paid-in capital Accumulated earnings           Total shareholders’ equity           Total liabilities and shareholders’ equity Statement [Table] Statement [Line Items] Common stock, shares authorized Common stock, shares issued Common stock, shares outstanding Income Statement [Abstract] Revenues:   Sales and lease income   Interest and other income        Total revenues Cost and expenses:   Cost of sales   Selling, general and administrative   Depreciation and amortization        Total cost and expenses   Operating income (loss) before other income     and income taxes   Other income:     Crop insurance proceeds     Net gain on property damage and lost profits,        net of insurance claims     Income (loss) before income taxes     Income tax benefit        Net income (loss) Net income (loss) per share - basic Net income (loss) per share - diluted Beginning balance, value Distribution for retirement     plan contribution for     employees of affiliates     under common control Net loss Ending balance, value Statement of Cash Flows [Abstract] Net cash provided by (used in) operating activities Net cash provided by (used in) investing activities:   Property additions    Insurance proceeds from casualty loss   Proceeds from retirement plan investments   Net cash used in financing activities:   Distribution for retirement plan contribution for     employees of affiliates under common control           Net decrease in cash and cash equivalents         Cash and cash equivalents at beginning of period         Cash and cash equivalents at end of period Pay vs Performance Disclosure [Table] Executive Category [Axis] Individual [Axis] Adjustment to Compensation [Axis] Measure [Axis] Pay vs Performance Disclosure, Table Company Selected Measure Name Named Executive Officers, Footnote Peer Group Issuers, Footnote Changed Peer Group, Footnote PEO Total Compensation Amount PEO Actually Paid Compensation Amount Adjustment To PEO Compensation, Footnote Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Compensation Actually Paid Amount Adjustment to Non-PEO NEO Compensation Footnote Equity Valuation Assumption Difference, Footnote Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Company Selected Measure Total Shareholder Return Vs Peer Group Compensation Actually Paid vs. Other Measure Tabular List, Table Total Shareholder Return Amount Peer Group Total Shareholder Return Amount Net Income (Loss) Company Selected Measure Amount Other Performance Measure, Amount Adjustment to Compensation, Amount PEO Name Name Non-GAAP Measure Description Additional 402(v) Disclosure Pension Benefits Adjustments, Footnote Equity Awards Adjustments, Footnote Erroneously Awarded Compensation Recovery [Table] Restatement Determination Date [Axis] Restatement Determination Date Aggregate Erroneous Compensation Amount Erroneous Compensation Analysis Stock Price or TSR Estimation Method Outstanding Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Not Yet Determined Name Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery, Explanation of Impracticability Name Compensation Amount Restatement does not require Recovery Awards Close in Time to MNPI Disclosures [Table] Award Type [Axis] Award Timing MNPI Disclosure Award Timing Method Award Timing Predetermined Award Timing MNPI Considered Award Timing, How MNPI Considered MNPI Disclosure Timed for Compensation Value Awards Close in Time to MNPI Disclosures, Table Name Underlying Securities Exercise Price Fair Value as of Grant Date Underlying Security Market Price Change Trading Arrangements, by Individual [Table] Trading Arrangement [Axis] Material Terms of Trading Arrangement Name Title Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted Adoption Date Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated Termination Date Expiration Date Arrangement Duration Aggregate Available Insider Trading Policies and Procedures [Line Items] Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Not Adopted Organization, Consolidation and Presentation of Financial Statements [Abstract] Summary of Significant Accounting Policies Real Estate [Abstract] Land Development Retirement Benefits [Abstract] Retirement Plan Investments Income Tax Disclosure [Abstract] Provision for Income Taxes Related Party Transactions [Abstract] Transactions with Affiliates Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Earnings Per Share [Abstract] Calculation of Net Income (Loss) Per Share Segment Reporting [Abstract] Business Segment Information Subsequent Events [Abstract] Subsequent Events Basis of Presentation Property Use of Estimates Cash and Cash Equivalents Inventory Allowance for Credit Loss Reserve Subsequent Events Revenue Recognition Lease Accounting Recently Issued Accounting Pronouncements Other Liabilities Schedule of Inventory Schedule of Revenues Subject to Accounting Standards Codification 606 Schedule of Computation of Net Income (Loss) Per Share - Basic and Diluted Schedule of Information by Segment Inventory, Current [Table] Inventory [Line Items] Collaborative Arrangement and Arrangement Other than Collaborative [Table] Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] Total Asset, Impairment Loss Money market fund Credit loss reserve Lease income Lease expense Real Estate [Table] Real Estate [Line Items] Proceeds from sale of land Future funds committed by KLMC to improve parcel of land sold Contract price for sewer line improvement Amount paid by KLMC on sewer line project Sewer line project commitment amount Interest rate of receivable per Purchase Agreement Accounts Receivable, Allowance for Credit Loss Defined Benefit Plan [Table] Defined Benefit Plan Disclosure [Line Items] Value of Pension Plan assets recently transferred and held in investment suspense account Value of amounts allocated to participants in QRP Value of amounts allocated to participants in terminated pension plan Distributions for retirement plan contributions for employees of affiliates under common control Deferred compensation liability Related Party Transaction [Table] Related Party Transaction [Line Items] Selling, general and administative expense Crop insurance proceeds Unallocated advance insurance payment related to Lahaina Wildfire Net gain on property damage and lost profits, net of insurance claims Approximate future costs and expenditures KLMC remains committed for on uncompleted portion of Bypass Highway Maximum amount KLMC has agreed to contribute towards construction costs on Bypass Highway project Numerator: Net loss attributable to stockholders Denominator: Number of weighted average share outstanding - basic Number of weighted average share outstanding - diluted Net loss per share - basic Net loss per share - diluted Segment Reporting [Table] Segment Reporting [Line Items]     Revenue from property sale     Other revenue     Land basis and other costs of property sale     Operating costs and expenses     Property tax     Credit loss reserve expense     Other selling, general, and administrative expenses     Depreciation     Corporate operating loss before income taxes     Revenue     Cost of goods sold     Net gain on property damage and lost profits,       net of insurance claims Income (loss) before income taxes Segment reporting, description Number of Reportable Segments Subsequent Event [Table] Subsequent Event [Line Items] Prepaid retirement plan contribution. Deposits and deferred gains. Revenue from real estate, net. Generally recurring costs associated with normal operations except for the portion of these expenses which can be clearly related to production and included in cost of sales or services. Excludes Selling, General and Administrative Expense. Crop insurance proceeds classified as other income. Distribution to employees of affiliated companies. Disclosure of accounting policy for leasing arrangements entered into by lessor and lesse. Land basis and other costs of property sale. Funds committed by entity for improvements to land sold depending on various factors, for off-site roadway, water, sewer and electrical improvements that will also provide service to other adjacent properties. Contract price for sewer line improvement project. Amount paid by KLMC on sewer line project. Sewer line project commitment amount. Interest rate of receivable per Purchase Agreement. Value of Pension Plan assets recently transferred and held in investment suspense account. Amount allocated to the participants in the qualified replacement plan. Value of amounts allocated to participants in terminated pension plan. Unallocated advance insurance payment related to Lahaina Wildfire. Approximate future costs and expenditures KLMC remains committed for relating to the planning and design of the uncompleted portion of the Bypass Highway. Maximum amount KLMC has agreed to contribute towards construction costs on Bypass Highway project. Assets [Default Label] Liabilities [Default Label] Equity, Attributable to Parent Liabilities and Equity OperatingCostAndExpense Nonoperating Income (Expense) Income Tax Expense (Benefit) DistributionsToEmployeesOfAffiliatedCompanies Payments to Acquire Property, Plant, and Equipment Cash Provided by (Used in) Investing Activity, Including Discontinued Operation Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Excluding Exchange Rate Effect, Including Discontinued Operation Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Forgone Recovery, Individual Name Outstanding Recovery, Individual Name Awards Close in Time to MNPI Disclosures, Individual Name Trading Arrangement, Individual Name Inventory, Policy [Policy Text Block] Subsequent Events, Policy [Policy Text Block]