CONDENSED CONSOLIDATED STATEMENTS OF INCOME (LOSS) (UNAUDITED) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Revenues:
Revenues from products and services	$ 81,575	$ 73,396	$ 154,716	$ 146,646
Leasing		2,300
Total revenues	93,978	80,797	177,115	162,036
Cost of sales:
Total cost of sales	69,663	61,539	133,658	118,326
Selling, general and administrative	22,498	29,593	44,891	59,151
Engineering and product development	2,720	3,722	6,396	7,759
Restructuring and other charges	5,765	1,000	5,797	26,020
(Gain) loss on sale of property, plant and equipment	(380)	82	(494)	(3,873)
Foreign currency transaction (gains) and losses	(2,419)	(475)	(3,673)	899
Total costs and expenses	97,847	95,461	186,575	208,282
Operating loss	(3,869)	(14,664)	(9,460)	(46,246)
Interest income	573	63	776	112
Interest expense	(99)	(59)	(153)	(498)
Loss before income taxes	(3,395)	(14,660)	(8,837)	(46,632)
Income tax provision	2,175	4,407	5,671	6,793
Net loss	$ (5,570)	$ (19,067)	$ (14,508)	$ (53,425)
Loss per common share:
Basic (in dollars per share)	$ (0.16)	$ (0.54)	$ (0.42)	$ (1.51)
Diluted (in dollars per share)	$ (0.16)	$ (0.54)	$ (0.42)	$ (1.51)
Weighted average common shares outstanding:
Basic (in shares)	34,476	35,387	34,485	35,386
Diluted (in shares)	34,476	35,387	34,485	35,386
Products
Revenues:
Revenues from products and services	$ 61,979	$ 55,860	$ 117,621	$ 111,443
Cost of sales:
Total cost of sales	54,180	43,920	102,218	85,124
Services
Revenues:
Revenues from products and services	19,596	17,536	37,095	35,203
Cost of sales:
Total cost of sales	7,884	8,317	16,668	17,667
Leasing
Revenues:
Leasing	12,403	7,401	22,399	15,390
Cost of sales:
Total cost of sales	$ 7,599	$ 9,302	$ 14,772	$ 15,535