CONSOLIDATED CONDENSED STATEMENTS OF EARNINGS AND COMPREHENSIVE INCOME (UNAUDITED) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
CONSOLIDATED CONDENSED STATEMENTS OF EARNINGS AND COMPREHENSIVE INCOME (UNAUDITED)
Net sales	$ 74,329	$ 84,150	$ 209,819	$ 237,458
Cost of sales	41,427	47,997	116,818	135,136
Gross earnings	32,902	36,153	93,001	102,322
Selling and administrative expenses	22,739	23,720	67,926	72,803
Earnings from operations	10,163	12,433	25,075	29,519
Interest income	894	269	2,763	598
Interest expense	(15)	(5)	(15)	(522)
Other expense, net	(185)	(133)	(423)	(431)
Earnings before provision for income taxes	10,857	12,564	27,400	29,164
Provision for income taxes	2,794	3,227	7,080	7,518
Net earnings	$ 8,063	$ 9,337	$ 20,320	$ 21,646
Basic weighted average shares outstanding (in shares)	9,439	9,451	9,435	9,458
Diluted weighted average shares outstanding (in shares)	9,599	9,530	9,576	9,539
Basic earnings per share (in dollars per share)	$ 0.85	$ 0.99	$ 2.15	$ 2.29
Diluted earnings per share (in dollars per share)	0.84	0.98	2.12	2.27
Cash dividends declared (per share) (in dollars per share)	$ 0.26	$ 0.25	$ 0.77	$ 0.74
Comprehensive income	$ 9,055	$ 8,656	$ 20,427	$ 21,104