Note D - Treasury Stock (Details Textual) - shares	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Stock Repurchase Program, Number of Shares Authorized to be Repurchased (in shares)	497,581
Share-Based Payment Arrangement, Shares Withheld for Tax Withholding Obligation (in shares)	510	292	344