v3.3.1.900
Product Warranties - Activity in Product Warranty Reserves (Detail) - USD ($)
12 Months Ended
Jan. 02, 2016
Dec. 27, 2014
Guarantees [Abstract]    
Balance at beginning of period $ 1,245,000 $ 1,185,000
Warranty charges 1,478,920 1,715,182
Warranty payments (1,263,920) (1,655,182)
Balance at end of period $ 1,460,000 $ 1,245,000