Cover [Abstract] Document Information [Table] Class of Stock [Axis] Class of Stock [Domain] Common Stock [Member] Common Stock Cumulative Preferred Stock [Member] Document Information [Line Items] Document Type Document Type Document Annual Report Document Period End Date Document Period End Date Document Fiscal Year Focus Document Fiscal Year Focus Document Transition Report Securities Act File Number Entity Registrant Name Entity Registrant Name Entity Incorporation, State or Country Code Entity Tax Identification Number Entity Address, Address Line One Entity Address, Address Line Two Entity Address, City or Town Entity Address, State or Province Entity Address, Postal Zip Code City Area Code Local Phone Number Title of 12(b) Security Trading Symbol Trading Symbol Security Exchange Name Entity Well-known Seasoned Issuer Entity Voluntary Filers Entity Current Reporting Status Entity Current Reporting Status Entity Interactive Data Current Entity Filer Category Entity Filer Category Entity Small Business Entity Emerging Growth Company ICFR Auditor Attestation Flag Document Financial Statement Error Correction [Flag] Entity Shell Company Entity Listing, Par Value Per Share Entity Public Float Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Current Fiscal Year End Date Current Fiscal Year End Date Auditor Firm ID Auditor Name Auditor Location Entity Central Index Key Entity Central Index Key Document Fiscal Period Focus Document Fiscal Period Focus Amendment Flag Amendment Flag Documents Incorporated by Reference [Text Block] Statement of Financial Position [Abstract] Statement [Table] Statement [Line Items] Assets [Abstract] Property, Plant and Equipment, Net [Abstract] Real Estate: Land Land, at Cost Buildings and Improvements, Gross Building and Improvements, at Cost Property, Plant and Equipment, Gross Total Real Estate, at Cost Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Less, Accumulated Depreciation Property, Plant and Equipment, Net Real Estate-Net Disposal Group, Including Discontinued Operation, Assets Assets Held for Sale Total Assets Held for Sale Mortgage Loans on Real Estate, Commercial and Consumer, Net Commercial Loans and Investments Total Commercial Loans and Investments Cash and Cash Equivalent Cash and Cash Equivalents Restricted Cash Restricted Cash Finite-Lived Intangible Assets, Net Intangible Lease Assets-Net Sub-total Intangible Lease Assets-Net Amount of Straight-Line Rent Adjustment. Straight-Line Rent Adjustment Straight-Line Rent Adjustment Prepaid Expense and Other Assets Other Assets Total Other Assets Assets Total Assets Total Assets Liabilities and Equity [Abstract] Liabilities [Abstract] Liabilities: Amount of Accounts Payable, Accrued Expenses and Other Liabilities. Accounts Payable, Accrued Expenses and Other Liabilities Accounts Payable, Accrued Expenses, and Other Liabilities Total Accounts Payable, Accrued Expenses, and Other Liabilities Amount of Prepaid Rent and Deferred Revenue. Prepaid Rent and Deferred Revenue Prepaid Rent and Deferred Revenue Below Market Lease, Net Sub-total Intangible Lease Liabilities -Net Intangible Lease Liabilities-Net Intangible Lease Liabilities-Net Participating Mortgage Loans, Mortgage Obligations, Amount Obligation Under Participation Agreement Long-Term Debt Long-Term Debt-Net Total Long-Term Debt Long-term debt Liabilities Total Liabilities Commitments and Contingencies Commitments and Contingencies-See Note 20 Equity, Attributable to Parent [Abstract] Equity: Preferred Stock, Value, Issued Preferred Stock, $0.01 par value per share, 100 million shares authorized, $0.01 par value, 8.00% Series A Cumulative Redeemable Preferred Stock, $25.00 Per Share Liquidation Preference, 2,083,328 shares issued and outstanding as of December 31, 2025 and no shares issued and outstanding as of December 31, 2024 Common Stock, Value, Issued Common Stock, $0.01 par value per share, 500 million shares authorized, 14,783,419 shares issued and outstanding as of December 31, 2025 and 14,691,982 shares issued and outstanding as of December 31, 2024 Additional Paid in Capital, Common Stock Additional Paid-in Capital Retained Earnings (Accumulated Deficit) Dividends in Excess of Net Income Accumulated Other Comprehensive Income (Loss), Net of Tax Accumulated Other Comprehensive Income Equity, Attributable to Parent Stockholders' Equity Equity, Attributable to Noncontrolling Interest Noncontrolling Interest Equity, Including Portion Attributable to Noncontrolling Interest Balance Balance Total Equity Liabilities and Equity Total Liabilities and Equity Preferred Stock, Number of Shares, Par Value and Other Disclosure [Abstract] Preferred Stock Preferred Stock, Par or Stated Value Per Share Preferred Stock, par value (in dollars per share) Preferred Stock, Shares Authorized Preferred Stock, shares authorized Preferred Stock, Dividend Rate, Percentage Preferred Stock, dividend rate (as a percent) Preferred Stock, Liquidation Preference Per Share Preferred Stock, Liquidation Preference (in dollars per share) Preferred Stock, Shares Issued Preferred Stock, shares issued Preferred Stock, Shares Outstanding Preferred Stock, shares outstanding Common Stock, Number of Shares, Par Value and Other Disclosure [Abstract] Common Stock Common Stock, Par or Stated Value Per Share Common Stock, par value (in dollars per share) Common Stock, Shares Authorized Common Stock, shares authorized Common Stock, Shares, Issued Common Stock, shares issued Common Stock, Shares, Outstanding Common Stock, shares outstanding Income Statement [Abstract] Revenues [Abstract] Revenues: Operating Lease, Lease Income Lease Income Total Lease Income Interest and Fee Income, Loans, Commercial, Real Estate Interest Income from Commercial Loans and Investments Revenue Not from Contract with Customer, Other Other Revenue Other Revenues Revenues Total Revenues Cost of Revenue [Abstract] Operating Expenses: Amount of Real Estate Expenses. Real Estate Expenses Real Estate Expenses General and Administrative Expense General and Administrative Expenses General and Administrative Expenses Impairment of Real Estate Provision for Impairment Impairment charge Depreciation, Depletion and Amortization Depreciation and Amortization Operating Expenses Total Operating Expenses Gain (Loss) on Disposition of Assets Gain on Disposition of Assets Gain on Disposition of Assets Gain on disposition of assets Gain (Loss) on Extinguishment of Debt, Cash and Noncash Gain (Loss) on Extinguishment of Debt, Cash and Noncash Gain on Extinguishment of Debt Gain (Loss) on Extinguishment of Debt Operating Income (Loss) Net Income From Operations Investment and Other Income Investment and Other Income Investment and Other Income Interest Expense, Nonoperating Interest Expense Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Net Income (Loss) Net Income (Loss) Net Income (Loss) Net Income (Loss) Attributable to Noncontrolling Interest Less: Net Loss (Income) Attributable to Noncontrolling Interest Net Loss (Income) Attributable to Noncontrolling Interest Net Income (Loss) Attributable to Alpine Income Property Trust, Inc. Redeemable Preferred Stock Dividends Less: Distributions to Preferred Stockholders Net Income (Loss) Available to Common Stockholders, Basic Net Income (Loss) Attributable to Common Stockholders - Basic Net Income (Loss) Attributable to Common Stockholders Earnings Per Share, Diluted [Abstract] Per Common Share Data: Earnings Per Share, Basic Basic (in dollars per share) Earnings Per Share, Diluted Diluted (in dollars per share) Weighted Average Number of Shares Outstanding, Diluted [Abstract] Weighted Average Number of Common Shares: Weighted Average Number of Shares Outstanding, Basic Weighted Average Number of Common Shares Outstanding (in shares) Basic (in shares) Weighted Average Number of Shares Outstanding, Diluted Total Shares Applicable to Diluted Earnings per Share (in shares) Diluted (in shares) Statement of Comprehensive Income [Abstract] Other Comprehensive Income (Loss), Net of Tax [Abstract] Other Comprehensive Loss Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax, Parent Cash Flow Hedging Derivative - Interest Rate Swaps Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Total Other Comprehensive Loss Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Total Comprehensive Loss Net Income (Loss) Attributable to Noncontrolling Interest [Abstract] Less: Comprehensive Loss Attributable to Noncontrolling Interest Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Noncontrolling Interest Other Comprehensive Loss (Income) Attributable to Noncontrolling Interest Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest Comprehensive Loss (Income) Attributable to Noncontrolling Interest Comprehensive Income (Loss), Net of Tax, Attributable to Parent Comprehensive Loss Attributable to Alpine Income Property Trust, Inc. Other Comprehensive Income (Loss), before Tax, Portion Attributable to Noncontrolling Interest Other Comprehensive Income Attributable to Noncontrolling Interest Cumulative amount before tax of other comprehensive income (loss) attributable to noncontrolling interests. Other Comprehensive Income Attributable To Non controlling Interest Cumulative Cumulative amount of other comprehensive income attributable to non controlling interest Statement of Stockholders' Equity [Abstract] Equity Components [Axis] Equity Component [Domain] Parent [Member] Parent Preferred Stock [Member] Preferred Stock Additional Paid-in Capital [Member] Additional Paid-In Capital Retained Earnings [Member] Retained Earnings (Dividends in Excess of Net Income) AOCI Attributable to Parent [Member] Accumulated Other Comprehensive Income Noncontrolling Interest [Member] Noncontrolling Interest Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (decrease) in shareholders' equity Partners' Capital Account, Redemptions Operating Partnership Unit Redemptions Treasury Stock, Value, Acquired, Cost Method Common Stock Repurchases Stock Repurchase Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures Common Stock Issuances to Directors Preferred stock impact of the value of new stock issued during the period. Includes shares issued in an initial public offering or a secondary public offering. Stock Issued During Period, Value, New Preferred Share, Issues Issuance of Preferred Stock, Net of Underwriting Discount and Expenses Stock Issued During Period, Value, New Issues Proceeds from Issuance of Stock Stock Issuances, Net of Equity Issuance Costs Dividends, Preferred Stock, Cash Preferred Stock Dividends Dividends, Common Stock, Cash Common Stock Dividends Other Comprehensive Income (Loss), Net of Tax Other Comprehensive Income (Loss) Common Stock, Dividends, Per Share, Cash Paid Common Stock Dividends (in dollars per share) Preferred Stock, Dividends, Per Share, Cash Paid Preferred Stock Dividends (in dollars per share) Statement of Cash Flows [Abstract] Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Cash Flow From Operating Activities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract] Adjustments to Reconcile Net Income (Loss) to Net Cash Provided By Operating Activities: Depreciation, Depletion and Amortization, Including Discontinued Operations Depreciation, Depletion and Amortization, Including Discontinued Operations Depreciation and Amortization Amortization of Below Market Lease Amortization of Intangible Lease Assets and Liabilities to Lease Income Accretion to Properties Revenue Amortization of Debt Issuance Costs Amortization of Deferred Financing Costs to Interest Expense Amortization of Deferred Financing Costs to Interest Expense Accretion of Commercial Loans and Investments Origination Fees Accretion of Commercial Loans and Investments Origination Fees Accretion of Commercial Loans and Investments Origination Fees Share-Based Payment Arrangement, Noncash Expense Non-Cash Compensation Increase (Decrease) in Operating Assets [Abstract] Decrease (Increase) in Assets: Increase (Decrease) in Prepaid Rent Straight-Line Rent Adjustment Increase (Decrease) in Other Operating Assets Other Assets Increase (Decrease) in Operating Liabilities [Abstract] Increase (Decrease) in Liabilities: Increase (Decrease) in Accounts Payable and Accrued Liabilities Accounts Payable, Accrued Expenses, and Other Liabilities The amount of increase (decrease) in prepaid rent and deferred revenue. Increase (Decrease) in Prepaid Rent And Deferred Revenue Prepaid Rent and Deferred Revenue Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Net Cash Provided By Operating Activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract] Cash Flow From Investing Activities: Payments to Acquire Real Estate Acquisition of Real Estate Including Intangible Lease Assets and Liabilities The cash outflow from the acquisition of a piece of land and anything permanently fixed to it, including buildings, structures on it and so forth, and payments to development of real estate assets by adding improvements on or to a parcel of land. Such improvements may include drainage, utilities, subdividing, access, buildings, and any combination of these elements. Including real estate intended to generate income for the owner; excluding real estate acquired for use by the owner. Payments To Acquire And Development of Real Estate Investments in and Improvements to Real Estate Cash used for investments in and improvements to real estate Proceeds from Sale of Productive Assets Proceeds from Disposition of Assets Payments to Acquire Loans Receivable Acquisition of Commercial Loans and Investments Borrowing Amount Proceeds from Collection of Loans Receivable Principal Payments Received on Commercial Loans and Investments Total proceeds to the company Proceeds from Sale of Mortgage Servicing Rights (MSR) Proceeds from Sale of Participation Interest Payments to Acquire Mortgage Servicing Rights (MSR) Payments on Participation Obligation Cash inflow associated with commercial loan reserves. Proceeds From Commercial Loan Reserves Proceeds from commercial loan reserves Cash Received for Commercial Loan Reserves Cash Provided by (Used in) Investing Activity, Including Discontinued Operation Net Cash Used In Investing Activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Cash Flow from Financing Activities: Proceeds from Issuance of Long-Term Debt Proceeds from Long-Term Debt Repayments of Long-Term Debt Payments on Long-Term Debt Payments of Loan Costs Cash Paid for Loan Fees Payments for Repurchase of Common Stock Repurchases of Common Stock The cash inflow from issuance of preferred stock, net that is classified as callable. Proceeds From Issuance of Redeemable Preferred Stock, Net of Issuance Cost Proceeds from Issuance of Preferred Stock, Net of Underwriting Discount and Expenses Proceeds from Issuance of Common Stock, Net of Stock Issuance Costs Proceeds from Issuance of Common Stock, Net of Stock Issuance Costs Proceeds From Stock Issuances, Net Net proceeds Payments of Ordinary Dividends, Preferred Stock and Preference Stock Dividends Paid - Preferred Stock Payments of Ordinary Dividends, Common Stock Dividends Paid - Common Stock Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Net Cash Provided By (Used In) Financing Activities Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Excluding Exchange Rate Effect, Including Discontinued Operation Net Increase (Decrease) in Cash and Cash Equivalents and Restricted Cash Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Cash and Cash Equivalents and Restricted Cash, End of Period Cash and Cash Equivalents and Restricted Cash, Beginning of Period Total Cash Supplemental Cash Flow Information [Abstract] Supplemental Disclosure of Cash Flow Information: Interest Paid, Excluding Capitalized Interest, Operating Activity Cash Paid for Interest Total Interest Paid Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] Supplemental Disclosure of Non-Cash Investing and Financing Activities: Derivative, Gain (Loss) on Derivative, Net Unrealized Loss on Cash Flow Hedge