Organization and Summary of Significant Accounting Policies - Summary of Effect of Restatement on Previously Reported Unaudited Condensed Consolidated Statement of Comprehensive Income (Loss) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands		3 Months Ended
		Mar. 31, 2022	Mar. 31, 2021
Net revenue		$ 71,990	$ 81,031
Cost of revenue		46,599	52,936
Gross profit		25,391	28,095
Operating expenses:
Research and product development		11,844	11,119
Selling, marketing, general and administrative		17,742	31,824
Restructuring and other charges		436	6,252
Impairment of long-lived assets			1,735
Amortization of intangible assets		294	262
Total operating expenses		30,316	51,192
Operating loss		(4,925)	(23,097)
Interest income		37	42
Interest expense		(127)	(249)
Other expense, net		(800)	972
Loss before income taxes		(5,815)	(22,332)
Income tax provision (benefit)		1,771	893
Net loss		(7,586)	(23,225)
Foreign currency translation adjustments		(268)	(2,270)
Actuarial loss			(28)
Comprehensive loss		$ (7,854)	$ (25,523)
Net loss per share
Basic		$ (0.28)	$ (0.92)
Diluted		$ (0.28)	$ (0.92)
Weighted average shares outstanding
Basic		27,530	25,252
Diluted		27,530	25,252
As Previously Reported
Net revenue		$ 77,040
Cost of revenue		50,215
Gross profit		26,825
Operating expenses:
Research and product development		11,844
Selling, marketing, general and administrative		17,742
Restructuring and other charges		436
Amortization of intangible assets		294
Total operating expenses		30,316
Operating loss		(3,491)
Interest income		37
Interest expense		(127)
Other expense, net		(800)
Loss before income taxes		(4,381)
Income tax provision (benefit)		(1,333)
Net loss		(3,048)
Foreign currency translation adjustments		(268)
Comprehensive loss		$ (3,316)
Net loss per share
Basic		$ (0.11)
Diluted		$ (0.11)
Weighted average shares outstanding
Basic		27,530
Diluted		27,530
Adjustments
Net revenue	[1]	$ (5,050)
Cost of revenue	[1]	(3,616)
Gross profit		(1,434)
Operating expenses:
Operating loss		(1,434)
Loss before income taxes		(1,434)
Income tax provision (benefit)	[2]	3,104
Net loss		(4,538)
Comprehensive loss		$ (4,538)
Net loss per share
Basic		$ (0.17)
Diluted		$ (0.17)

[1] Error corrections relating to the timing of revenue recognition with respect to certain customer projects.

[2] Tax impact on the error corrections relating to the timing of revenue recognition with respect to certain customer projects.