Segment Information - Revenues from External Customers (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Apr. 03, 2015	Mar. 28, 2014
Revenue from External Customer [Line Items]
Sales Revenue, Goods, Net	$ 185,599	$ 169,904
Original Equipment Manufacturers (OEM's)
Revenue from External Customer [Line Items]
Sales Revenue, Goods, Net	56,608	55,735
Home Improvement Retailers
Revenue from External Customer [Line Items]
Sales Revenue, Goods, Net	34,395	30,086
Industrial and Architectural Contractors
Revenue from External Customer [Line Items]
Sales Revenue, Goods, Net	33,221	33,862
Rural Contractors
Revenue from External Customer [Line Items]
Sales Revenue, Goods, Net	21,641	18,904
Distributors
Revenue from External Customer [Line Items]
Sales Revenue, Goods, Net	19,030	14,299
Home Improvement Contractors
Revenue from External Customer [Line Items]
Sales Revenue, Goods, Net	11,302	9,145
Manufactured Housing
Revenue from External Customer [Line Items]
Sales Revenue, Goods, Net	$ 9,402	$ 7,873