Segment Information (Details 2) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Net sales and long-lived assets by geographical area
Net sales	$ 230,974	$ 216,139	$ 660,470	$ 609,295
Wood Construction Products
Net sales and long-lived assets by geographical area
Net sales	193,513	182,869	562,025	518,381
Concrete Construction Products
Net sales and long-lived assets by geographical area
Net sales	37,461	33,229	98,445	90,614
Other
Net sales and long-lived assets by geographical area
Net sales	$ 0	$ 41	$ 0	$ 300