Note N - Interim Financial Information (Unaudited) - Quarterly Unaudited Financial Information (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended									12 Months Ended
	Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Net Sales	$ 134,692	$ 91,823	$ 85,060	$ 76,653	$ 98,416	$ 83,141	$ 78,946	$ 80,409		$ 388,228	$ 340,912	$ 321,623
Gross Profit	32,791	17,223	14,699	13,853	20,653	15,399	13,380		$ 18,020	78,566	67,452	55,125
Net Earnings	$ 20,732	$ 8,083	$ 6,077	$ 6,568	$ 13,159	$ 7,019	$ 5,503	$ 8,878		$ 41,460	$ 34,559	$ 20,699
First (in dollars per share)	$ 2.92	$ 1.13	$ 0.85	$ 0.92	$ 1.85	$ 0.99	$ 0.77	$ 1.25		$ 5.82	$ 4.86	$ 2.92