Note 10 - Stockholders' Equity (Details Textual) - USD ($)	3 Months Ended	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2023	Aug. 05, 2022
Treasury Stock, Shares, Acquired (in shares)	4,265	4,435
Shares Acquired, Average Cost Per Share (in dollars per share)	$ 7.14	$ 7.16
Treasury Stock, Value, Acquired, Cost Method	$ 30,451	$ 31,762
Weighted Average [Member]
Shares Acquired, Average Cost Per Share (in dollars per share)	$ 7.14	$ 7.14
Common Stock [Member]
Stock Repurchase Program, Authorized Amount			$ 1,500,000