Segment Information (Details 2) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Net sales and long-lived assets by geographical area
Net sales	$ 209,320	$ 195,619	$ 585,518	$ 545,248
Wood Construction Products
Net sales and long-lived assets by geographical area
Net sales	175,522	164,091	496,564	462,751
Concrete Construction Products
Net sales and long-lived assets by geographical area
Net sales	33,704	31,488	88,735	82,323
Other
Net sales and long-lived assets by geographical area
Net sales	$ 94	$ 40	$ 219	$ 174