CONDENSED CONSOLIDATED STATEMENTS OF INCOME (LOSS) (UNAUDITED) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Revenues:
Revenues from products and services	$ 78,951	$ 73,182	$ 233,667	$ 219,829
Total revenues	88,141	82,997	265,256	245,033
Cost of sales:
Total cost of sales	65,710	62,834	199,368	181,159
Selling, general and administrative	22,431	25,265	67,322	84,416
Engineering and product development	2,645	3,510	9,041	11,270
Restructuring and other charges	2,180	0	7,977	26,020
(Gain) loss on sale of property, plant and equipment	(17,276)	(13)	(17,770)	(3,886)
Foreign currency transaction gains	(1,901)	(1,663)	(5,574)	(764)
Total costs and expenses	73,789	89,933	260,364	298,215
Operating income (loss)	14,352	(6,936)	4,892	(53,182)
Interest income	379	188	1,155	300
Interest expense	(131)	(94)	(284)	(592)
Income (loss) before income taxes	14,600	(6,842)	5,763	(53,474)
Income tax provision (benefit)	(610)	4,301	5,061	11,094
Net income (loss)	$ 15,210	$ (11,143)	$ 702	$ (64,568)
Loss per common share:
Basic (in dollars per share)	$ 0.45	$ (0.31)	$ 0.02	$ (1.82)
Diluted (in dollars per share)	$ 0.44	$ (0.31)	$ 0.02	$ (1.82)
Weighted average common shares outstanding:
Basic (in shares)	33,948	35,387	34,304	35,386
Diluted (in shares)	34,232	35,387	34,580	35,386
Products
Revenues:
Revenues from products and services	$ 58,508	$ 53,622	$ 176,129	$ 165,066
Cost of sales:
Total cost of sales	49,714	48,120	151,932	133,243
Services
Revenues:
Revenues from products and services	20,443	19,560	57,538	54,763
Cost of sales:
Total cost of sales	8,105	7,020	24,773	24,687
Leasing
Revenues:
Leasing	9,190	9,815	31,589	25,204
Cost of sales:
Total cost of sales	$ 7,891	$ 7,694	$ 22,663	$ 23,229