Acquisitions (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 26, 2015	Sep. 27, 2014	Sep. 26, 2015	Sep. 27, 2014
Business Acquisition [Line Items]
Gain on purchase of business	$ 0	$ (173)	$ 0	$ (11,110)
Atlas Carpet Mills [Member]
Business Acquisition [Line Items]
Total purchase price consideration				18,759
Gain on purchase of business				10,937
Revenue of Atlas since acquisition date	$ 12,415	12,079	$ 32,395	25,927
Burtco Enterprises, Inc [Member]
Business Acquisition [Line Items]
Total purchase price consideration				2,549
Gain on purchase of business		$ 173		$ 173