Note 9 - Fair Value Measurements - Assets and Liabilities Measured At Fair Value On a Recurring Basis (Details) - Fair Value, Recurring [Member] - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Total fair value of assets measured on a recurring basis	$ 0	$ 0
Total fair value of liabilities measured on a recurring basis	(26)	(113)
Fair Value, Inputs, Level 1 [Member]
Total fair value of assets measured on a recurring basis	0	0
Total fair value of liabilities measured on a recurring basis	0	0
Fair Value, Inputs, Level 2 [Member]
Total fair value of assets measured on a recurring basis	0	0
Total fair value of liabilities measured on a recurring basis	(26)	(113)
Fair Value, Inputs, Level 3 [Member]
Total fair value of assets measured on a recurring basis	0	0
Total fair value of liabilities measured on a recurring basis	0	0
Interest Rate Cap [Member]
Interest rate cap	0	0
Interest rate cap	(26)	(113)
Interest Rate Cap [Member] | Fair Value, Inputs, Level 1 [Member]
Interest rate cap	0	0
Interest rate cap	0	0
Interest Rate Cap [Member] | Fair Value, Inputs, Level 2 [Member]
Interest rate cap	0	0
Interest rate cap	(26)	(113)
Interest Rate Cap [Member] | Fair Value, Inputs, Level 3 [Member]
Interest rate cap	0	0
Interest rate cap	$ 0	$ 0