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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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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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