Note 10 - Stockholders' Equity (Details Textual) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Aug. 05, 2022
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares)	0	35,000
Common Stock [Member]
Stock Repurchase Program, Authorized Amount			$ 1.5
Treasury Stock, Shares, Acquired (in shares)	170	1,311
Shares Acquired, Average Cost Per Share (in dollars per share)	$ 7.74	$ 7.71