Segment Information (Details 2) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Net sales and long-lived assets by geographical area
Net sales	$ 216,139	$ 209,320	$ 609,295	$ 585,518
Wood Construction Products
Net sales and long-lived assets by geographical area
Net sales	182,869	175,522	518,381	496,564
Concrete Construction Products
Net sales and long-lived assets by geographical area
Net sales	33,229	33,704	90,614	88,735
Other
Net sales and long-lived assets by geographical area
Net sales	$ 41	$ 94	$ 300	$ 219