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Balance Sheet Details - Accrued Expenses (Detail) - USD ($) $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Capitalized Contract Cost [Line Items] |  |
Accrued technology license payments | $ 4,500 | $ 4,500
Accrued professional fees | 861 | 1,270
Accrued engineering and production costs | 4,491 | 646
Accrued restructuring | 294 | 1,946
Accrued royalty | 923 | 980
Accrued customer credits | 832 | 1,204
Taxes Payable | 65 | 784
Contract with Customer, Liability | 107 | 71
Other | 4,496 | 6,615
Total | 31,171 | 28,282
Operating Lease, Liability, Current | 4,810 | 1,214
Reduction in Transaction Price [Member] |  |
Capitalized Contract Cost [Line Items] |  |
Customer Refund Liability, Current | 8,382 | 7,558
Sales Returns and Allowances [Member] |  |
Capitalized Contract Cost [Line Items] |  |
Accrued obligations to customers for stock rotation rights | $ 1,410 | $ 1,494

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