Annual report pursuant to Section 13 and 15(d)

Balance Sheet Details - Accrued Expenses (Detail)

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Balance Sheet Details - Accrued Expenses (Detail) - USD ($)
$ in Thousands
Dec. 31, 2017
Dec. 31, 2016
Balance Sheet Related Disclosures [Abstract]    
Accrued technology license payments $ 4,500 $ 5,850
Accrued professional fees 1,497 1,620
Accrued engineering and prod costs 2,378 1,232
Accrued restructuring 3,039 536
Accrued royalty 1,206 846
Accrued leases 1,105 1,560
Accrued customer credit 2,667 1,207
Other 3,914 3,507
Total $ 20,306 $ 16,358