Note J - Earnings Per Share (Details Textual) - shares	3 Months Ended				6 Months Ended
	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2022	Jun. 30, 2021
Share-Based Payment Arrangement, Option [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares)	13,063		50,653		14,063	52,442
Restricted Stock [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares)	0		3,846		11,138	1,934
Convertible Preferred Stock [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares)		1,001,614		1,001,614	1,001,614	1,001,614
Series A Preferred Stock [Member]
Preferred Stock, Dividend Rate, Percentage					5.00%