Consolidated Statements of Comprehensive Loss shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2020 USD ($) $ / shares shares
Income Statement [Abstract]
Net revenue	$ 300,640
Cost of revenue	203,761
Gross profit	96,879
Operating expenses:
Research and product development	37,957
Selling, marketing, general and administrative	63,543
Impairment of long-lived assets	6,472
Amortization of intangible assets	1,432
Total operating expenses	109,404
Operating loss	(12,525)
Interest expense, net	(1,958)
Loss on extinguishment of debt	(1,369)
Other income (expense), net	(3,729)
Loss before income taxes	(19,581)
Income tax provision	3,501
Net loss	(23,082)
Foreign currency translation adjustments	2,796
Actuarial gain (loss)	(981)
Comprehensive loss	$ (21,267)
Net loss per share
Basic | $ / shares	$ (1.07)
Diluted | $ / shares	$ (1.07)
Weighted average shares outstanding, basic | shares	21,588
Weighted average shares outstanding, diluted | shares	21,588