Cover [Abstract] Document Information [Table] Document Information [Line Items] Entity Central Index Key Entity Central Index Key Document Type Document Type Document Quarterly Report Document Period End Date Document Period End Date Document Transition Report 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 Current Fiscal Year End Date Current Fiscal Year End Date 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] ASSETS Property, Plant and Equipment, Net [Abstract] Real Estate: 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 Property, plant, and equipment 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 25 Total Assets Held for Sale Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures Investment in Joint Ventures Equity Securities, FV-NI Investment in Alpine Income Property Trust, Inc. Estimated Fair Value (Level 1 and 2 Inputs) Represents the cost basis of mitigation credits as of the balance sheet date. Mitigation Credits Investment mitigation credits assets Loans and Leases Receivable, Net Amount Commercial Loan and Master Lease Investments 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 13 Total Other Assets Assets Identifiable Assets Total Assets Total Assets Liabilities and Equity [Abstract] LIABILITIES AND STOCKHOLDERS' EQUITY Liabilities [Abstract] Liabilities: Accounts Payable Accounts Payable Accrued Liabilities and Other Liabilities Accrued and Other Liabilities-See Note 19 Total Accrued and Other Liabilities Deferred Revenue. Deferred Revenue-See Note 20 Deferred Revenue, Total Total deferred revenue Below Market Lease, Net Total Intangible Lease Liabilities-Net Below market lease value Disposal Group, Including Discontinued Operation, Liabilities Total Liabilities Held for Sale Liabilities Held for Sale-See Note 25 Deferred Income Tax Liabilities, Net Deferred Income Taxes-Net Long-term Debt. Long-Term Debt Total Long-Term Debt Liabilities Liabilities Total Liabilities Commitments and Contingencies. Commitments and Contingencies-See Note 23 Stockholders' Equity Attributable to Parent [Abstract] Stockholders' Equity: Preferred Stock, Value, Issued Preferred Stock - 100,000,000 shares authorized; $0.01 par value, no shares issued or outstanding at June 30, 2021; 50,000 shares authorized; $100.00 par value, no shares issued or outstanding at December 31, 2020 Common Stock, Value, Issued Common Stock - 500,000,000 shares authorized; $0.01 par value, 5,955,154 shares issued and outstanding at June 30, 2021; 25,000,000 shares authorized; $1.00 par value, 7,310,680 shares issued and 5,915,756 shares outstanding at December 31, 2020 Treasury Stock, Common, Value Treasury Stock - 0 shares at June 30, 2021 and 1,394,924 shares at December 31, 2020 Additional Paid in Capital, Common Stock Additional Paid-In Capital Retained Earnings (Accumulated Deficit) Retained Earnings Accumulated Other Comprehensive Income (Loss), Net of Tax Accumulated Other Comprehensive Loss Stockholders' Equity Attributable to Parent Balance Balance Equity Total Stockholders' Equity Liabilities and Equity Total Liabilities and Stockholders' Equity Total Liabilities and Shareholders' Equity Preferred Stock, Number of Shares, Par Value and Other Disclosures [Abstract] Preferred Stock Preferred Stock, Shares Authorized 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 Preferred Stock, Shares Outstanding Preferred Stock, Shares Outstanding 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 Treasury Stock, Shares [Abstract] Treasury Stock Treasury Stock, Common, Shares Treasury Stock, shares held Income Statement [Abstract] Revenues [Abstract] Revenues Revenues Total Revenues Cost of Revenue [Abstract] Direct Cost of Revenues Cost of Revenue Total Direct Cost of Revenues General and Administrative Expense General and Administrative Expenses Disposal Group, Not Discontinued Operation, Loss (Gain) on Write-down Impairment Charges Impairment charge 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 on Disposition of Assets Gain (Loss) on Extinguishment of Debt Loss (Gain) on Extinguishment of Debt Gain (Loss) on Extinguishment of Debt Other Operating Income Other Gains and Income Operating Income (Loss) Operating Income (Loss) Total Operating Income (Loss) Operating Income 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 (Expense) Income Tax Expense (Benefit) Income Tax Benefit (Expense) Net Income (Loss) Attributable to Parent Net Income (Loss) Net Income (Loss) COMMON STOCK AND EARNINGS (LOSS) PER SHARE Per Share Information-See Note 15: Earnings Per Share, Basic [Abstract] Basic Net Income (Loss) per Share Earnings Per Share, Basic Basic Net Income (Loss) per Share (in dollars per share) Earnings Per Share, Diluted [Abstract] Diluted Net Income (Loss) per Share Earnings Per Share, Diluted Diluted Net Income (Loss) per Share (in dollars per share) Diluted Net Income (Loss) per Share (in dollars per share) Weighted Average Number of Shares Outstanding, Basic Basic Weighted Average Shares Outstanding Weighted Average Number of Shares Outstanding, Diluted Diluted Total Shares Applicable to Diluted Earnings Per Share Common Stock, Dividends, Per Share, Declared Dividends Declared and Paid (in dollars per share) CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) Other Comprehensive Income (Loss), Net of Tax [Abstract] Other Comprehensive Income (Loss): Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax, Parent Cash Flow Hedging Derivative - Interest Rate Swaps (Net of Income Tax Expense of $0, ($0.2) million, $0, and ($0.6) million, respectively) Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Total Other Comprehensive Income (Loss), Net of Income Tax Other Comprehensive Income (Loss), Net of Income Tax Comprehensive Income (Loss), Net of Tax, Attributable to Parent Total Comprehensive Income (Loss) Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, Tax, Parent Cash Flow Hedging Derivative - Interest Rate Swap, Income Tax Statement of Stockholders' Equity [Abstract] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (decrease) in shareholders' equity Treasury Stock, Value, Acquired, Cost Method Stock Repurchase Stock repurchased amount Adjustments To Additional Paid In Capital Equity Component Of Convertible Debt Equity Component of Convertible Debt Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures Vested Restricted Stock and Performance Shares Stock Issued During Period, Value, New Issues Exercise of Stock Options and Stock Issuance Purchase price of shares Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition Stock Compensation Expense from Restricted Stock Grants and Equity Classified Stock Options Treasury Stock, Retired, Par Value Method, Amount 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 Equity Issuance Costs Dividends, Common Stock, Cash Dividends Declared for the Period 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 Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to Reconcile Net Income 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 Liabilities to Income Property Revenue Increase to Income Properties 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 Gain on Disposition of Real Estate and Intangible Lease Assets and Liabilities Gain (Loss) on Disposition of Assets Held-for-sale Gain (Loss) on Disposition of Assets Held-for-sale Gain on Disposition of Assets Held for Sale Gain (Loss) on Sales of Loans, Net 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 impact fees and mitigation credits. Increase Decrease In Impact Fees And Mitigation Credits Impact Fees and Mitigation Credits 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 Increase Decrease In Accrued Income Taxes Payable Income Taxes Payable 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 to Acquire Loans Held-for-investment Acquisition of Commercial Loan Investments and Master Lease Investments The cash outflow associated with acquiring mitigation credits during the period. Payments To Acquire Mitigation Credits Acquisition of Mitigation Credits Payments To Acquire Land Acquisition of Land Acquisition of property Payments for (Proceeds from) Interest in Joint Venture Payments for (Proceeds from) Interest in Joint Venture Cash Contribution to Interest in Joint Venture 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 Net Cash Provided by (Used in) Investing Activities Net Cash 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 Cash Proceeds from Payments for Stock Options and Stock Issuance Payments for Repurchase of Common Stock Cash Used to Purchase Common Stock Payments Related to Tax Withholding for Share-based Compensation Cash Paid for Vesting of Restricted Stock Payments of Stock Issuance Costs Cash Paid for Equity Issuance Costs Payments of Ordinary Dividends, Common Stock Dividends Paid Net Cash Provided by (Used in) Financing Activities Net Cash Provided By (Used In) Financing Activities Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Excluding Exchange Rate Effect Net Decrease in Cash and Cash Equivalents Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Cash and Cash Equivalents, End of Period Cash and Cash Equivalents, 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] Other Significant Noncash Transactions [Line Items] Supplemental Cash Flow Information [Abstract] Supplemental Disclosure of Cash Flow Information: Income Taxes Paid, Net Cash Paid for Taxes, net of Refunds Received Interest Paid, Net Cash Paid for Interest Total Interest Paid Debt Conversion, Converted Instrument, Amount Debt conversion amount Convertible Note Exchange Debt Instrument, Convertible, Carrying Amount of Equity Component Equity Component of Convertible Debt Dividends Dividends Declared and Unpaid Assumption of Mortgage Note Payable by Buyer DESCRIPTION OF BUSINESS Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Text Block] DESCRIPTION OF BUSINESS SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Business Description and Accounting Policies [Text Block] SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES REVENUE RECOGNITION Revenue from Contract with Customer [Text Block] REVENUE RECOGNITION INCOME PROPERTIES AND LEASES Lessor, Direct Financing Leases [Text Block] INCOME PROPERTIES AND LEASES