Quarterly report pursuant to Section 13 or 15(d)

Income Taxes - Additional Information (Detail)

v3.3.0.814
Income Taxes - Additional Information (Detail) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2015
Sep. 30, 2014
Business Acquisition [Line Items]        
Provision (benefit) for income taxes $ 549 $ 28 $ (631) $ 456
Increase in unrecognized tax benefits     $ 1,900  
Period of change of unrecognized tax benefits     12 months  
Accrued interest on accrued penalties associated with uncertain tax positions 50   $ 50  
Accrued penalties associated with uncertain tax position $ 20   20  
Entropic [Member]        
Business Acquisition [Line Items]        
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount     1,600  
Increase in unrecognized tax benefits     $ 1,500