Note J - Earnings Per Share (Details Textual) - shares	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Share-Based Payment Arrangement, Option [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares)	13,366	46,380
Unvested Shares [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares)	24,918	29,983
Series A Preferred Stock [Member]
Preferred Stock, Dividend Rate, Percentage	5.00%