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Income Taxes - Additional Information (Detail) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2016
Mar. 28, 2015
Income Taxes [Line Items]    
Income tax expense $ 543 $ (96)
Lower year over year discrete tax benefit due to the reversal of a valuation allowance 100  
Income tax expense increase (decrease) $ 600  
Effective tax rate 15.00% (16.90%)