Note J - Earnings Per Share - Reconciliations of Basic and Diluted EPS (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2023	Jun. 30, 2022
Net income	$ 580	$ (791)	$ 4,461	$ 3,345	$ (211)	$ 7,806
Less: Preferred Stock dividends	0		124		0	246
Less: Earnings attributable to participating securities	0		542		0	946
Net income attributable to common stockholders	580		3,795		(211)	6,614
Add back: Allocation of earnings to participating securities	0		542		0	946
Less: Re-allocation of earnings to participating securities considering potentially dilutive securities	0		(518)		0	(908)
Numerator for diluted EPS	$ 580		$ 3,819		$ (211)	$ 6,652
Basic (in shares)	7,358		7,017		7,392	7,004
Diluted (in shares)	7,505		7,388		7,392	7,338
Basic (in dollars per share)	$ 0.08		$ 0.54		$ (0.03)	$ 0.94
Diluted (in dollars per share)	$ 0.08		$ 0.52		$ (0.03)	$ 0.91