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Acquisitions (Details) - Georgia-Pacific Engineered Wood Products Production Facilities [Member] - USD ($) $ / shares in Units, $ in Thousands			12 Months Ended
		Mar. 31, 2016	Dec. 31, 2016	Dec. 31, 2015
Business Acquisition [Line Items]
Purchase price of acquisition		$ 215,900
Purchase price post-closing adjustment			$ 300
Acquisition related costs			3,600	$ 1,600
Business Acquisition, Pro Forma Information [Abstract]
Sales			3,938,409	3,726,477
Net Income	[1]		$ 41,400	$ 54,425
Net income per common share - Basic			$ 1.07	$ 1.39
Net income per common share - Diluted			$ 1.06	$ 1.38
Term Loan Due 2026 [Member]
Business Acquisition [Line Items]
Acquisition related borrowings		75,000
Revolving Credit Facility [Member]
Business Acquisition [Line Items]
Acquisition related borrowings		$ 55,000
[1] The pro forma financial information for the years ended December 31, 2016 and 2015, was adjusted to exclude $3.6 million and $1.6 million, respectively, of pre-tax acquisition-related costs for legal, accounting, and other advisory-related services.

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