Property, Equipment and Leasehold Improvements (Detail) - USD ($) $ in Thousands	Dec. 30, 2016	Jan. 01, 2016
Property:
Land	$ 11,888	$ 4,450
Buildings	37,883	35,817
Construction in progress	67	1,457
Equipment:
Machinery and equipment	40,440	37,520
Office furniture and equipment	9,669	7,824
Leasehold improvements	14,464	13,580
Property, Plant and Equipment, Gross, Total	114,411	100,648
Less accumulated depreciation and amortization	77,701	72,163
Property, equipment and leasehold improvements, net	$ 36,710	$ 28,485