Annual report pursuant to Section 13 and 15(d)

Balance Sheet Components - Components of Accrued Liabilities (Detail)

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Balance Sheet Components - Components of Accrued Liabilities (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Other Liabilities Disclosure [Abstract]    
Payroll and employee related expenses $ 2,682 $ 2,037
Professional services 150 122
Other accrued expenses 329 98
Total accrued liabilities $ 3,161 $ 2,257