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Curtailment of Manufacturing Facilities (Details) - USD ($) $ in Millions			3 Months Ended
	Feb. 20, 2020	Nov. 02, 2018	Mar. 31, 2020	Dec. 31, 2018
Curtailment of LVL Production at Roxboro, NC Facility [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Activities, Initiation Date		Nov. 02, 2018
Restructuring and Related Activities, Completion Date		Dec. 31, 2018
Accelerated depreciation				$ 55.0
Curtailment of LVL Production at Roxboro, NC Facility [Member] \| Loss on sale and curtailment of facilities [Member]
Restructuring Cost and Reserve [Line Items]
CIP and spare parts write-offs				2.6
Severance-related expenses				$ 0.2
Curtailment of I-joist Production at Roxboro, NC Facility [Member] [Member] \| Subsequent Event [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Activities, Initiation Date	Feb. 20, 2020
Restructuring and Related Activities, Completion Date	Mar. 31, 2020
Restructuring and Related Cost, Expected Cost	$ 18.0
Forecast [Member] \| Curtailment of I-joist Production at Roxboro, NC Facility [Member] [Member]
Restructuring Cost and Reserve [Line Items]
Accelerated depreciation			$ 18.0