Revenue from External Customer by Products and Services (Details 1) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jan. 03, 2015	Dec. 28, 2013	Dec. 29, 2012
Revenue from External Customer [Line Items]
Net sales	$ 1,186,973	$ 1,169,598	$ 1,142,521
Vinyl Windows [Member]
Revenue from External Customer [Line Items]
Net sales	401,550	369,869	357,267
Vinyl Siding Products [Member]
Revenue from External Customer [Line Items]
Net sales	213,949	216,872	227,374
Metal Products [Member]
Revenue from External Customer [Line Items]
Net sales	155,464	166,602	174,111
Third-party Manufactured Products [Member]
Revenue from External Customer [Line Items]
Net sales	296,927	314,408	302,966
Other Products and Services [Member]
Revenue from External Customer [Line Items]
Net sales	$ 119,083	$ 101,847	$ 80,803