Segment Information (Details 2) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Net sales and long-lived assets by geographical area
Net sales	$ 229,973	$ 216,665	$ 429,496	$ 393,156
Wood Construction Products
Net sales and long-lived assets by geographical area
Net sales	196,734	184,133	368,512	335,512
Concrete Construction Products
Net sales and long-lived assets by geographical area
Net sales	33,239	32,375	60,983	57,385
Other
Net sales and long-lived assets by geographical area
Net sales	$ 0	$ 157	$ 1	$ 259