Segment Information (Details 2) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Net sales and long-lived assets by geographical area
Net sales	$ 364,304	$ 309,932	$ 974,048	$ 874,029
Wood construction products
Net sales and long-lived assets by geographical area
Net sales	311,167	255,869	834,411	731,898
Concrete construction products
Net sales and long-lived assets by geographical area
Net sales	52,983	53,947	139,299	141,883
Other
Net sales and long-lived assets by geographical area
Net sales	154	116	338	248
North America
Net sales and long-lived assets by geographical area
Net sales	$ 316,902	$ 265,505	$ 852,759	$ 746,009