CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Sales	$ 70,736	$ 90,516	$ 210,815	$ 277,624
Cost of Sales	34,438	39,744	101,748	123,093
Gross Profit	36,298	50,772	109,067	154,531
Operating Expenses
Selling, general and administrative	30,163	45,880	96,523	131,909
Research and development	10,754	10,783	31,355	33,048
Restructuring costs	239	0	14,563	0
Total operating expenses	41,156	56,663	142,441	164,957
Loss from operations	(4,858)	(5,891)	(33,374)	(10,426)
Other (income) expense
Interest expense (income), net	161	(24)	407	72
Other (income) expense, net	(256)	514	334	2,398
Loss before income tax benefit	(4,763)	(6,381)	(34,115)	(12,896)
Income tax benefit	(1,739)	(182)	(7,336)	(444)
Net loss	$ (3,024)	$ (6,199)	$ (26,779)	$ (12,452)
Net (loss) income per share - Basic (in dollars per share)	$ (0.17)	$ (0.36)	$ (1.51)	$ (0.72)
Net (loss) income per share - Diluted (in dollars per share)	$ (0.17)	$ (0.36)	$ (1.51)	$ (0.72)
Weighted average shares - Basic (in shares)	17,797,390	17,367,228	17,757,359	17,352,386
Weighted average shares - Diluted (in shares)	17,797,390	17,367,228	17,757,359	17,352,386
Product
Sales	$ 48,082	$ 66,788	$ 146,866	$ 209,411
Cost of Sales	22,413	27,086	66,812	85,542
Service
Sales	22,654	23,728	63,949	68,213
Cost of Sales	$ 12,025	$ 12,658	$ 34,936	$ 37,551