CONDENSED CONSOLIDATED STATEMENTS OF INCOME AND COMPREHENSIVE INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
CONDENSED CONSOLIDATED STATEMENTS OF INCOME AND COMPREHENSIVE INCOME
Revenues	$ 114,785	$ 101,677
Cost of goods sold	81,325	71,609
Gross profit	33,460	30,068
Operating costs and expenses:
Selling	5,031	4,218
General and administrative	11,496	10,748
Engineering and development	9,385	6,959
Business development	848	19
Amortization of intangible assets	2,434	1,512
Total operating costs and expenses	29,194	23,456
Operating income	4,266	6,612
Other expense, net:
Interest expense	1,038	861
Other expense (income), net	45	(119)
Total other expense, net	1,083	742
Income before income taxes	3,183	5,870
Income tax (provision) benefit	(679)	6,057
Net income	$ 2,504	$ 11,927
Basic earnings per share:
Earnings per share	$ 0.17	$ 0.83
Basic weighted average common shares	15,096	14,306
Diluted earnings per share:
Earnings per share	$ 0.16	$ 0.83
Diluted weighted average common shares	15,599	14,438
Net income	$ 2,504	$ 11,927
Other comprehensive income:
Foreign currency translation adjustment	(1,233)	(4,007)
Gain on derivatives	2,601	708
Comprehensive income	$ 3,872	$ 8,628