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Acquisition - Summary of Unaudited Pro forma Results (Detail) - WinDoor [Member] - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 6 Months Ended
Jul. 04, 2015
Jul. 02, 2016
Jul. 04, 2015
Business Acquisition [Line Items]      
Net sales $ 112,980 $ 221,700 $ 214,812
Net income $ 6,589 $ 7,484 $ 8,741
Net income per common share:      
Basic $ 0.14 $ 0.15 $ 0.18
Diluted $ 0.13 $ 0.15 $ 0.17