Property, Plant, and Equipment (Tables)

12 Months Ended

Dec. 30, 2017

Property Plant And Equipment [Abstract]

Property, Plant and Equipment

	December 30, 2017			December 31, 2016
Machinery and equipment	$	103,024		$	100,695
Office furniture and equipment		15,160			12,886
Buildings		48,977			39,641
Building and land improvements		9,513			9,270
Land		16,977			10,453
	$	193,651		$	172,945
Less:  Accumulated depreciation		(107,251	)		(96,489	)
Construction in progress		5,531			4,059
Total	$	91,931		$	80,515