Revenue from Contract with Customer (Details) - ASC 606	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Wood construction products
Disaggregation of Revenue [Line Items]
Percentage of net sales	87.00%	86.00%
Concrete construction products
Disaggregation of Revenue [Line Items]
Percentage of net sales	13.00%	14.00%
Other
Disaggregation of Revenue [Line Items]
Percentage of net sales	1.00%