Note 12 - Fair Value Measurements - Fair Value of Financial Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Interest rate swap	$ 0	$ 27
Fair Value, Recurring [Member]
Total liabilities at fair value	27
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Total liabilities at fair value	0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Total liabilities at fair value	27
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Total liabilities at fair value	0
Fair Value, Recurring [Member] | Interest Rate Swap [Member]
Interest rate swap	27
Fair Value, Recurring [Member] | Interest Rate Swap [Member] | Fair Value, Inputs, Level 1 [Member]
Interest rate swap	0
Fair Value, Recurring [Member] | Interest Rate Swap [Member] | Fair Value, Inputs, Level 2 [Member]
Interest rate swap	27
Fair Value, Recurring [Member] | Interest Rate Swap [Member] | Fair Value, Inputs, Level 3 [Member]
Interest rate swap	$ 0