CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Revenues, net:
Revenue	$ 282,876	$ 213,786	$ 187,232
Costs of sales:
Costs of sales	220,755	174,461	149,821
Gross margin	62,121	39,325	37,411
Operating expenses:
Selling, general and administrative	83,998	46,196	38,068
Research and development	34,579	19,252	13,372
Amortization of identifiable intangible assets	1,825	1,163	156
Adjustment to contingent consideration liability	0	(3,340)	0
Gain on insurance proceeds	(4,400)	0	0
Total operating expenses	116,002	63,271	51,596
Operating loss	(53,881)	(23,946)	(14,185)
Other (expense) income, net	(1,279)	808	(449)
Loss on extinguishment of debt	(11,916)	(8,123)	0
Interest expense, net	(18,147)	(8,287)	(4,571)
Loss before benefit from income taxes	(85,223)	(39,548)	(19,205)
Benefit from income taxes	9,424	2,986	3,634
Net loss	$ (75,799)	$ (36,562)	$ (15,571)
Net loss per share, basic (in dollars per share)	$ (3.02)	$ (1.92)	$ (0.96)
Net loss per share, diluted (in dollars per share)	$ (3.02)	$ (1.92)	$ (0.96)
Weighted average shares outstanding, basic (in shares)	25,088	19,014	16,223
Weighted average shares outstanding, diluted (in shares)	25,088	19,014	16,223
Product
Revenues, net:
Revenue	$ 105,014	$ 73,228	$ 66,329
Costs of sales:
Costs of sales	80,841	58,887	51,189
Service
Revenues, net:
Revenue	105,337	69,284	56,978
Costs of sales:
Costs of sales	73,226	49,933	40,389
Contract
Revenues, net:
Revenue	72,525	71,274	63,925
Costs of sales:
Costs of sales	$ 66,688	$ 65,641	$ 58,243