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Balance Sheet Details - Summary of Accrued Warranty Obligations (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Sep. 30, 2013
Sep. 30, 2012
Guarantees [Abstract]        
Warranty liability at beginning of period $ 2,451 $ 2,674 $ 2,329 $ 1,525
Additions charged to operations 722 849 4,086 3,579
Deductions from liability (818) (1,042) (4,060) (2,623)
Warranty liability at end of period $ 2,355 $ 2,481 $ 2,355 $ 2,481