Product Warranty Reserves (Tables)

12 Months Ended

Dec. 27, 2014

Product Warranties Disclosures [Abstract]

Schedule of Product Warranty Liability [Table Text Block]

The following is a summary of the Company's product warranty activity.

	2014			2013
Product warranty reserve at beginning of period	$	1,850		$	1,297
Warranty reserve assumed in business combination	209			—
Warranty liabilities accrued	4,720			4,330
Warranty liabilities settled	(5,102		)	(3,905		)
Changes for pre-existing warranty liabilities	537			128
Product warranty reserve at end of period	$	2,214		$	1,850