Note 7 - Commitments and Contingencies (Details Textual) $ in Thousands		9 Months Ended
	Apr. 01, 2020 USD ($)	Sep. 30, 2021 USD ($) Merger shares	Dec. 31, 2020 USD ($)
Commitments and Contingencies [Line Items]
Deferred rent outstanding		$ 1,177	$ 885
COVID-19 [Member]
Commitments and Contingencies [Line Items]
Deferred contractual revenue	$ 500
Deferred contractual revenue waived	$ 300
Deferred rent outstanding		$ 300
Weighted average payback period of deferred rent	29 months
Weighted average payback period description		Approximately $0.3 million of the total deferred rent remains outstanding as of the date of these financial statements and has a weighted average payback period of approximately 29 months.
MedAmerica Properties Inc. [Member]
Commitments and Contingencies [Line Items]
Number of pending mergers | Merger		2
MedAmerica Properties Inc. [Member] | Common Stock [Member]
Commitments and Contingencies [Line Items]
Equity interest issued as consideration for the mergers | shares		1,317,055
MedAmerica Properties Inc. [Member] | OP Units [Member]
Commitments and Contingencies [Line Items]
Equity interest issued as consideration for the mergers | shares		573,529