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, 2022	Mar. 31, 2022	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2022	Jun. 30, 2021
Net income	$ 4,461	$ 3,345	$ 10,569	$ (1,758)	$ 7,806	$ 8,811
Less: Preferred Stock dividends	124		124		246	246
Less: Earnings attributable to participating securities	542		1,361		946	1,118
Income attributable to common stockholders	3,795		9,084		6,614	7,447
Add back: Allocation of earnings to participating securities	542		1,361		946	1,118
Less: Re-allocation of earnings to participating securities considering potentially dilutive securities	(518)		(1,277)		(908)	(1,055)
Numerator for diluted EPS	$ 3,819		$ 9,168		$ 6,652	$ 7,510
Basic (in shares)	7,017		6,686		7,004	6,669
Diluted (in shares)	7,388		7,193		7,338	7,131
Basic (in dollars per share)	$ 0.54		$ 1.36		$ 0.94	$ 1.12
Diluted (in dollars per share)	$ 0.52		$ 1.27		$ 0.91	$ 1.05