Unaudited Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) shares in Thousands, $ in Thousands		3 Months Ended						9 Months Ended
		Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2022	Sep. 30, 2021
Income Statement [Abstract]
Net revenue		$ 98,890			$ 88,412			$ 253,828	$ 252,143
Cost of revenue		66,860			56,213			173,122	164,771
Gross profit		32,030			32,199			80,706	87,372
Operating expenses:
Research and product development		15,499			11,707			39,691	34,788
Selling, marketing, general and administrative		23,698			19,539			61,953	69,619
Restructuring and other charges		601			6,754			1,393	12,098
Impairment of long-lived assets		827						827	1,735
Amortization of intangible assets		1,190			312			1,948	888
Total operating expenses		41,815			38,312			105,812	119,128
Operating loss		(9,785)			(6,113)			(25,106)	(31,756)
Interest income		47			20			120	81
Interest expense		(446)			(49)			(773)	(326)
Other expense, net		(1,984)			922			(2,847)	1,633
Loss before income taxes		(12,168)			(5,220)			(28,606)	(30,368)
Income tax provision (benefit)		(1,214)			676			2,498	2,032
Net loss		(10,954)	$ (12,564)	$ (7,586)	(5,896)	$ (3,279)	$ (23,225)	(31,104)	(32,400)
Foreign currency translation adjustments	[1]	(4,004)			(2,036)			(8,803)	(4,090)
Actuarial loss									55
Comprehensive loss		$ (14,958)			$ (7,932)			$ (39,907)	$ (36,435)
Net loss per share
Basic		$ (0.39)			$ (0.22)			$ (1.12)	$ (1.22)
Diluted		$ (0.39)			$ (0.22)			$ (1.12)	$ (1.22)
Weighted average shares outstanding
Basic		27,902			27,201			27,696	26,484
Diluted		27,902			27,201			27,696	26,484

[1] (a) Includes net loss on intra-entity foreign currency transactions that are of a long-term investment nature of $0.9 million and $2.0 million for three and nine months ended September 30, 2022 and $0.4 million and $0.9 million for three and nine months ended September 30, 2021.