Quarterly report pursuant to Section 13 or 15(d)

Income Taxes - Additional Information (Detail)

v3.2.0.727
Income Taxes - Additional Information (Detail) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Income Tax Disclosure [Abstract]        
Increase in unrecognized tax benefits     $ 2,000  
Increase in unrecognized tax benefits related to Acquisition of Entropic     $ 1,600  
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  
Business Acquisition [Line Items]        
Provision for (benefit from) income taxes $ (1,384) $ 320 (1,180) $ 428
Entropic [Member]        
Business Acquisition [Line Items]        
Provision for (benefit from) income taxes     $ (1,900)