CONDENSED CONSOLIDATED STATEMENTS OF INCOME AND COMPREHENSIVE INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
CONDENSED CONSOLIDATED STATEMENTS OF INCOME AND COMPREHENSIVE INCOME
Revenues	$ 146,713	$ 145,549
Cost of goods sold	99,336	99,715
Gross profit	47,377	45,834
Operating costs and expenses:
Selling	6,298	6,032
General and administrative	14,440	14,820
Engineering and development	11,067	10,387
Business development	357	197
Amortization of intangible assets	3,115	3,009
Total operating costs and expenses	35,277	34,445
Operating income	12,100	11,389
Other expense, net:
Interest expense	3,388	2,983
Other (income) expense, net	(109)	187
Total other expense, net	3,279	3,170
Income before income taxes	8,821	8,219
Income tax provision	(1,919)	(1,904)
Net income	$ 6,902	$ 6,315
Basic earnings per share:
Earnings per share	$ 0.42	$ 0.40
Basic weighted average common shares	16,394	15,872
Diluted earnings per share:
Earnings per share	$ 0.42	$ 0.39
Diluted weighted average common shares	16,497	16,137
Net income	$ 6,902	$ 6,315
Other comprehensive income (loss):
Foreign currency translation adjustment	(4,408)	1,354
Loss on derivatives, net of tax	(78)	(1,133)
Comprehensive income	$ 2,416	$ 6,536