Cover [Abstract] Document Information [Table] Class of Stock [Axis] Class of Stock [Domain] Common Stock Cumulative Preferred Stock Document Information [Line Items] Entity Central Index Key Entity Central Index Key Document Type Document Type Document Quarterly Report Document Transition Report Document Period End Date Document Period End Date Current Fiscal Year End Date Current Fiscal Year End Date Entity 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 Current Reporting Status Entity Current Reporting Status Entity Interactive Data Current Entity Filer Category Entity Filer Category Entity Small Business Entity Emerging Growth Company Entity Shell Company Entity Listing, Par Value Per Share Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Amendment Flag Amendment Flag Statement of Financial Position [Abstract] Statement [Table] Statement [Line Items] Statement Assets [Abstract] Real Estate Investment Property, Net [Abstract] Real Estate: Land Land, at Cost Investment Building and Building Improvements Building and Improvements, at Cost Fixtures and Equipment, Gross Other Furnishings and Equipment, at Cost Development in Process Construction in Process, at Cost Real Estate Investment Property, at Cost Total Real Estate, at Cost Real Estate Investment Property, Accumulated Depreciation Less, Accumulated Depreciation Real Estate Investment Property, Net Real Estate-Net Inventory, Real Estate, Land and Land Development Costs Land and Development Costs Total Land and Development Costs Finite-Lived Intangible Assets, Net Intangible Lease Assets-Net Total Disposal Group, Including Discontinued Operation, Assets Assets Held for Sale-See Note 24 Total Assets Held for Sale Equity Securities, FV-NI Investment in Alpine Income Property Trust, Inc. Estimated Fair Value (Level 1 Inputs) Represents the cost basis of mitigation credits as of the balance sheet date. Mitigation Credits Migration credits The carrying amount of mitigation credit rights as at the end of the reporting period. Mitigation Credit Rights Mitigation Credit Rights Loans and Leases Receivable, Net Amount Commercial Loan and Master Lease Investments Carrying Value Cash and Cash Equivalents, at Carrying Value Cash and Cash Equivalents Cash and Cash Equivalents Restricted Cash Restricted Cash Restricted Cash Income Taxes Receivable Refundable Income Taxes Deferred Income Taxes-Net Other Assets Other Assets - See Note 12 Total Other Assets Assets Identifiable Assets Total Assets Liabilities and Equity [Abstract] Liabilities [Abstract] Liabilities: Accounts Payable Accounts Payable Accrued Liabilities and Other Liabilities Accrued and Other Liabilities-See Note 18 Total Accrued and Other Liabilities Deferred Revenue. Deferred Revenue-See Note 19 Deferred Revenue, Total Below Market Lease, Net Total Intangible Lease Liabilities-Net Below market lease value Deferred Income Tax Liabilities, Net Deferred Income Taxes-Net Long-term Debt. Long-Term Debt Total Long-Term Debt Liabilities Total Liabilities Commitments and Contingencies. Commitments and Contingencies-See Note 22 Stockholders' Equity Attributable to Parent [Abstract] Stockholders' Equity: Preferred Stock, Value, Issued Preferred Stock - 100,000,000 shares authorized; $0.01 par value, 6.375% Series A Cumulative Redeemable Preferred Stock, $25.00 Per Share Liquidation Preference, 3,000,000 shares issued and outstanding at March 31, 2022 and December 31, 2021 Common Stock, Value, Issued Common Stock - 500,000,000 shares authorized; $0.01 par value, 6,011,611 shares issued and outstanding at March 31, 2022 and 5,916,226 shares issued and outstanding at December 31, 2021 Additional Paid in Capital, Common Stock Additional Paid-In Capital Additional paid-in capital Retained Earnings (Accumulated Deficit) Retained earnings Accumulated Other Comprehensive Income (Loss), Net of Tax Accumulated Other Comprehensive Income Stockholders' Equity Attributable to Parent Balance Balance Total Stockholders' Equity Liabilities and Equity Total Liabilities and Stockholders' Equity Preferred Stock, Number of Shares, Par Value and Other Disclosures [Abstract] Preferred Stock Preferred Stock, Shares Authorized Preferred Stock, Shares Authorized Preferred Stock, Par or Stated Value Per Share Preferred Stock, par value (in dollars per share) Preferred Stock, Shares Issued Preferred Stock, Shares Issued Shares Outstanding Preferred Stock, Shares Outstanding Preferred Stock, Dividend rate (as a percent) Dividend rate (as a percent) Share Price Closing share price (in dollars per share) Common Stock, Number of Shares, Par Value and Other Disclosures [Abstract] Common Stock Common Stock, Shares Authorized Common Stock, shares authorized Common Stock, Par or Stated Value Per Share Common Stock, par value (in dollars per share) Common Stock, Shares, Issued Common Stock, shares issued Common Stock, Shares, Outstanding Common Stock, shares outstanding Income Statement [Abstract] Segments [Axis] Segments [Domain] Represents the income properties business segment of the entity. Income Properties Represents information relating to management service segment of the entity. Management Fee Income Represents the commercial loan investments business segment of the entity. Interest Income from Commercial Loan and Master Lease Investments Represents the real estate operations business segment of the entity. Real Estate Operations Revenues [Abstract] Revenues Revenues Revenues Total Revenues Cost of Revenue [Abstract] Direct Cost of Revenues Cost of Revenue Direct Cost of Revenues General and Administrative Expense General and Administrative Expenses Depreciation, Depletion and Amortization Depreciation and Amortization Depreciation and Amortization Costs and Expenses, Excluding Gain (Loss) on Disposition of Assets Costs and Expenses, Excluding Gain (Loss) on Disposition of Assets Total Operating Expenses Gain (Loss) on Disposition of Assets Gain (Loss) on Disposition of Assets Other Operating Income (Expense), Net Other Operating Expenses Other Gains and Income(Loss) Operating Income (Loss) Total Operating Income Operating Loss Investment and Other Income (Loss) Interest Income (Expense), Nonoperating, Net Interest Expense Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Income (Loss) Before Income Tax Benefit Income Tax Expense (Benefit) Income Tax Benefit Net Income (Loss) Attributable to Parent Net Income Attributable to the Company Net Income Attributable to the Company Net loss Preferred Stock Dividends, Income Statement Impact 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, Basic [Abstract] Per Share Information-See Note 14: Basic Earnings Per Share, Basic Basic Net Income (Loss) per Share Attributable to Common Stockholders (in dollars per share) Earnings Per Share, Diluted [Abstract] Per Share Information-See Note 14: Diluted Earnings Per Share, Diluted Diluted Net Income (Loss) per Share Attributable to Common Stockholders (in dollars per share) Weighted Average Number of Shares Outstanding, Basic Weighted Average Number of Common Shares - Basic (in shares) Weighted Average Shares Outstanding, Basic (in shares) Weighted Average Number of Shares Outstanding, Diluted Weighted Average Number of Common Shares - Diluted (in shares) Weighted Average Shares Outstanding, Diluted (in shares) CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME Other Comprehensive Income (Loss), Net of Tax [Abstract] Other Comprehensive Income: 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 Income Other Comprehensive Income Comprehensive Income (Loss), Net of Tax, Attributable to Parent Total Comprehensive Income Statement of Stockholders' Equity [Abstract] Equity Components [Axis] Equity Component [Domain] Preferred Stock Treasury Stock Additional Paid-In Capital Retained Earnings Accumulated Other Comprehensive Income (Loss) Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (decrease) in shareholders' equity Adjustments To Additional Paid In Capital Equity Component Of Convertible Debt Adjustment to Equity Component of Convertible Debt Upon Adoption of ASU 2020-06 Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures Vested Restricted Stock and Performance Shares Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition Stock-Based Compensation Expense Treasury Stock, Retired, Par Value Method, Amount Par Value $0.01 per Share and Treasury Stock Derecognized at January 29, 2021 Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs Stock Issuance, Net of Equity Issuance Costs Adjustments to Additional Paid in Capital, Stock Issued, Issuance Cost, Net Adjustments to Additional Paid in Capital, Stock Issued, Issuance Cost, Net Stock Issuance, Net of Equity Issuance Costs Stock Issued During Period, Value, New Issues Stock Issuance Purchase price of shares Preferred Stock Dividends Declared for the Period Preferred Stock Dividends Declared for the Period Dividends, Preferred Stock Dividends, Common Stock, Cash Cash Dividends Cash dividends The amount per share of special distribution on REIT conversion. Special Distribution Per Share Special Distribution (in dollars per share) Statement of Cash Flows [Abstract] Net Cash Provided by (Used in) Operating Activities [Abstract] Cash Flow from Operating Activities: Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Net Income Attributable to the Company Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to Reconcile Net Income Attributable to the Company 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 Accretion to Income Properties Revenue Amortization of Intangible Liabilities to Income Property Revenue Amortization of Debt Issuance Costs Amortization of Deferred Financing Costs to Interest Expense Amortization of Deferred Financing Costs Amortization of Debt Discount (Premium) Amortization of Discount on Convertible Notes Amortization of Discount on Convertible Debt Gain (Loss) on Disposition of Property Plant Equipment and Intangible Assets Gain (Loss) on Disposition of Property Plant Equipment and Intangible Assets Loss (Gain) on Disposition of Assets Loss on sale of loans Loss on Disposition of Commercial Loan and Master Lease Investments Asset Impairment Charges Impairment Charges Impairment Charges Represents the discount accretion on commercial loan investments. Discount Accretion on Commercial Loan Investments Accretion of Commercial Loan and Master Lease Investment Origination Fees Amount of amortization of deferred fees on acquisition of loans held in the entity's portfolio recognized in the income statement. Amortization of Deferred Charges, Fees on Acquisition of Portfolio Loans Non-Cash Imputed Interest Increase (Decrease) in Deferred Income Taxes Deferred Income Taxes Equity Securities, FV-NI, Unrealized Gain (Loss) Unrealized (Gain) Loss on Investment Securities Share-based Compensation Non-Cash Compensation Increase (Decrease) in Operating Assets [Abstract] Decrease (Increase) in Assets: Increase (Decrease) in Income Taxes Receivable Refundable Income Taxes Increase decrease in land and development costs. Increase Decrease In Land And Development Costs Land and Development Costs Increase (decrease) in mitigation credits and mitigation credit rights. Increase (Decrease) in Mitigation Credits and Mitigation Credit Rights Mitigation Credits and Mitigation Credit Rights Increase (Decrease) in Other Operating Assets Other Assets Increase (Decrease) in Operating Liabilities [Abstract] Increase (Decrease) in Liabilities: Increase (Decrease) in Accounts Payable Accounts Payable Increase (Decrease) in Accrued Liabilities Accrued and Other Liabilities Increase (Decrease) in Contract with Customer, Liability Deferred Revenue Net Cash Provided by (Used in) Operating Activities Net Cash Provided By Operating Activities Net Cash Provided by (Used in) Investing Activities [Abstract] Cash Flow from Investing Activities: Payments To Acquire Businesses Gross Acquisition of Real Estate and Intangible Lease Assets and Liabilities Payments for (Proceeds from) Interest in Joint Venture Payments for (Proceeds from) Interest in Joint Venture Cash Contribution to Joint Ventures Proceeds from Sale of Debt Securities, Available-for-sale Proceeds from Disposition of Property, Plant, and Equipment, Net, and Assets Held for Sale Proceeds from Principal Repayments on Loans and Leases Held-for-investment Principal Payments Received on Commercial Loan and Master Lease Investments Payments to Acquire Available-for-sale Securities, Debt Acquisition of Investment Securities Net Cash Provided by (Used in) Investing Activities Net Cash Provided By (Used In) Investing Activities Net Cash Provided by (Used in) Financing Activities [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 Borrowings repaid Payoff of variable-rate mortgage loan Payments of Loan Costs Cash Paid for Loan Fees The net cash inflow or outflow from cash proceeds from (payments for) exercise of stock options and stock issuance Cash Proceeds from (Payments for) Exercise of Stock Options and Stock Issuance Payments for Exercise of Stock Options and Common Stock Issuance Payments Related to Tax Withholding for Share-based Compensation Cash Paid for Vesting of Restricted Stock Proceeds from Issuance of Common Stock, Net Proceeds from Issuance of Common Stock, Net Proceeds from Issuance of Common Stock, Net Payments of Ordinary Dividends, Preferred Stock and Preference Stock Dividends Paid - Preferred Stock Payments of Ordinary Dividends, Common Stock Dividends Paid - Common Stock Net Cash Provided by (Used in) Financing Activities Net Cash Used In Financing Activities Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Excluding Exchange Rate Effect Net Increase (Decrease) in Cash, Cash Equivalents and Restricted Cash Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Cash, Cash Equivalents and Restricted Cash, End of Period Cash, Cash Equivalents and Restricted Cash, Beginning of Period Total Cash Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents [Abstract] Reconciliation of Cash to the Consolidated Balance Sheets: Other Significant Noncash Transactions [Table] Debt Instrument [Axis] Debt Instrument, Name [Domain] Represents the information pertaining to 3.875% Convertible Senior Notes due 2025. 3.875% Convertible Senior Notes due 2025