CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Income Statement [Abstract]
Revenue, net	$ 20,021	$ 28,113
Cost of revenue	11,384	14,893
Gross profit	8,637	13,220
Operating expenses:
Research and development	7,664	7,522
Selling, general and administrative	8,823	7,935
Amortization of intangible assets	1,788	1,788
Acquisition related expenses	1,901	222
Impairment and other charges		1,694
Total operating expenses	20,176	19,161
Loss from operations	(11,539)	(5,941)
Other income (expense):
Interest expense, net	(1,515)	(1,370)
Other income (expense), net	1,936	220
Total other income (expense), net	421	(1,150)
Loss before provision for (benefit from) income taxes	(11,118)	(7,091)
(Benefit from) income taxes	(103)	(31)
Net loss	$ (11,015)	$ (7,060)
Net loss per share:
Basic and diluted (in dollars per share)	$ (0.36)	$ (0.24)
Weighted average number of shares used in computing net loss per share:
Basic and diluted (in shares)	30,561,076	29,592,247