Consolidated Statements of Operations and Comprehensive Income (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Revenue	$ 30,678	$ 30,418	$ 66,075	$ 55,141
Operating expenses:
Cost of product revenue	16,936	6,836	31,136	14,147
Research & development	4,532	4,165	10,582	8,423
Selling, general & administrative	14,550	7,502	28,981	15,174
Goodwill impairment	0	0	18,144	0
Change in fair value of contingent consideration	4,196	0	(20,326)	0
Total operating expenses	40,214	18,503	68,517	37,744
Income (loss) from operations	(9,536)	11,915	(2,442)	17,397
Interest and other income (expense), net	(169)	533	110	1,031
Income (loss) before income taxes	(9,705)	12,448	(2,332)	18,428
Provision for (benefit from) income taxes	(1,997)	3,013	(417)	4,486
Net income (loss)	$ (7,708)	$ 9,435	$ (1,915)	$ 13,942
Basic net income (loss) per share:
Net income (loss) (in dollars per share)	$ (0.54)	$ 0.68	$ (0.13)	$ 0.99
Basic weighted average common shares outstanding (in shares)	14,199	13,916	14,201	14,054
Diluted net income (loss) per share:
Net income (loss) (in dollars per share)	$ (0.54)	$ 0.67	$ (0.13)	$ 0.98
Diluted weighted average common shares outstanding (in shares)	14,199	14,088	14,201	14,203
Net income (loss)	$ (7,708)	$ 9,435	$ (1,915)	$ 13,942
Foreign currency translation adjustment	209	145	80	(170)
Comprehensive income (loss)	(7,499)	9,580	(1,835)	13,772
Product [Member]
Revenue	30,678	30,413	66,075	55,130
Service [Member]
Revenue	$ 0	$ 5	$ 0	$ 11