NATURE OF OPERATIONS AND ACCOUNTING POLICIES. (Details)	12 Months Ended
	Dec. 27, 2014 item	Dec. 28, 2013	Dec. 29, 2012
NATURE OF OPERATIONS AND ACCOUNTING POLICIES.
Number of manufacturing, distribution and component manufacturing locations in which the Company operated	8
Fiscal Year End
Length of fiscal years	364 days	364 days	364 days