Acquisitions Acquisition (Details 2) - USD ($)	Jun. 12, 2017	Dec. 14, 2016
EFCO Corporation
Business Acquisition
Total other intangible assets	$ 71,500,000
Sotawall
Business Acquisition
Total other intangible assets		$ 94,630
Tradename | EFCO Corporation
Business Acquisition
Total other intangible assets	32,400,000
Customer relationships | EFCO Corporation
Business Acquisition
Total other intangible assets	$ 34,800,000
Estimated useful life (in years)	16 years
Backlog | EFCO Corporation
Business Acquisition
Total other intangible assets	$ 4,300,000
Estimated useful life (in years)	1 year 6 months