Quarterly report pursuant to Section 13 or 15(d)

Balance Sheet Details - Accrued Expenses (Detail)

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Balance Sheet Details - Accrued Expenses (Detail) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2013
Dec. 31, 2012
Supplemental Balance Sheet Disclosures [Abstract]    
Accrued technology license payments $ 3,000 $ 2,996
Accrued professional fees 453 386
Accrued litigation costs 379 586
Other 1,025 1,055
Total $ 4,857 $ 5,023