Note 11 - Stock Compensation Plans - Restricted Stock and Restricted Stock Units (Details) - Restricted Stock Units (RSUs) [Member] - $ / shares		12 Months Ended
		Dec. 31, 2022		Dec. 31, 2021		Dec. 31, 2020
Outstanding (in shares)	[1]	329,333
Outstanding, weighted average grant date fair value (in dollars per share)		$ 6.95
Granted (in shares)	[2]	190,138
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share)		$ 9.40		$ 6.95		$ 5.95
Vested and released (in shares)		(187,188)
Vested and released, weighted average grant date fair value (in dollars per share)		$ 6.58
Canceled/Expired (in shares)		(36,578)
Canceled/Expired, weighted average grant date fair value (in dollars per share)		$ 8.57
Outstanding (in shares)		295,705	[3]	329,333	[1]
Outstanding, weighted average grant date fair value (in dollars per share)		$ 8.56		$ 6.95

[1] includes 54,792 awards which were settled in cash in June 2022.

[2] includes 35,088 awards which were expected to be settled in cash.

[3] includes 30,702 awards which are expected to be settled in cash.