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Note 2 - Significant Accounting Policies (Details Textual) $ / shares in Units, $ in Thousands | 1 Months Ended | 3 Months Ended |
--- | --- | --- | ---
Apr. 30, 2022 $ / shares shares | Mar. 31, 2022 USD ($) $ / shares shares | Mar. 31, 2021 USD ($) shares | Dec. 31, 2021 USD ($) $ / shares shares
Number of Operating Segments |  | 2 |  |
Retained Earnings (Accumulated Deficit), Total | $ |  | $ (66,871) |  | $ (61,736)
Share-Based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount | $ |  | $ 2,400 |  | $ 2,300
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year) |  | 1 year |  |
Percent of Distributed Dividends Equal to Taxable REIT Income |  | 90.00% |  |
Income Tax Expense (Benefit), Total | $ |  | $ 0 |  |
Weighted Average Number Diluted Shares Outstanding Adjustment, Total (in shares) |  | 0 | 0 |
Class B LLC Units [Member] |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares) |  | 26,317 |  |
LTIP Units [Member] |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number, Ending Balance (in shares) |  | 1,774,823 |  | 1,704,089
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value, Ending Balance (in dollars per share) | $ / shares |  | $ 9.64 |  | $ 9.66
LTIP Units [Member] | Subsequent Event [Member] |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) | 10 years |  |  |
LTIP Units [Member] | Subsequent Event [Member] | The 2015 Omnibus Incentive Plan [Member] |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Additional Shares Authorized, Subject to Approval (in shares) | 1,300,000 |  |  |
LTIP Units [Member] | Subsequent Event [Member] | The 2015 Non-Employee Director Plan [Member] |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Additional Shares Authorized, Subject to Approval (in shares) | 500,000 |  |  |
LTIP Units [Member] | Subsequent Event [Member] | Employees [Member] |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share) | $ / shares | $ 9.07 |  |  |
LTIP Units [Member] | Share-Based Payment Arrangement, Employee [Member] | Subsequent Event [Member] |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares) | 900,000 |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Subject to Approval (in shares) | 270,000 |  |  |
LTIP Units [Member] | Share-Based Payment Arrangement, Nonemployee [Member] | Subsequent Event [Member] |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares) | 275,000 |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Subject to Approval (in shares) | 82,500 |  |  |
Cumulative Effect, Period of Adoption, Adjustment [Member] |  |  |  |
Retained Earnings (Accumulated Deficit), Total | $ |  |  |  | $ 6,000
Collectability of Lease Receivables [Member] |  |  |  |
Loss Contingency, Loss in Period | $ |  | $ 800 | $ 1,100 |
Collectability of Lease Receivables [Member] | Tribeca House Instrument [Member] |  |  |  |
Revenues, Total | $ |  | $ 1,100 |  |

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