CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Sales	$ 79,917	$ 82,110	$ 156,573	$ 158,441
Cost of sales	39,480	36,628	75,111	72,552
Gross profit	40,437	45,482	81,462	85,889
Operating expenses
Selling, general and administrative	36,018	33,594	71,508	66,942
Research and development	12,042	11,760	24,170	23,733
Restructuring costs	1,333	779	1,932	2,303
Total operating expenses	49,393	46,133	97,610	92,978
Loss from operations	(8,956)	(651)	(16,148)	(7,089)
Other (income) expense
Interest (income) expense, net	(12)	39	(4)	49
Other (income) expense, net	(1,636)	883	(1,649)	(732)
Loss before income tax benefit	(7,308)	(1,573)	(14,495)	(6,406)
Income tax expense (benefit)	1,266	(397)	3,766	(2,009)
Net loss	$ (8,574)	$ (1,176)	$ (18,261)	$ (4,397)
Net loss per share - Basic (in dollars per share)	$ (0.47)	$ (0.06)	$ (1.00)	$ (0.24)
Net loss per share - Diluted (in dollars per share)	$ (0.47)	$ (0.06)	$ (1.00)	$ (0.24)
Weighted average shares - Basic (in shares)	18,266,747	18,161,110	18,267,783	18,133,368
Weighted average shares - Diluted (in shares)	18,266,747	18,161,110	18,267,783	18,133,368
Product
Sales	$ 59,702	$ 60,275	$ 116,432	$ 114,910
Cost of sales	28,169	25,455	52,504	50,259
Service
Sales	20,215	21,835	40,141	43,531
Cost of sales	$ 11,311	$ 11,173	$ 22,607	$ 22,293