Business Acquisitions - Acquired Intangible Assets (Details) - Kay Flow Industries, Inc.	May 18, 2015
Acquired Finite-Lived Intangible Assets [Line Items]
Useful life (years)	10 years
Unpatented technology
Acquired Finite-Lived Intangible Assets [Line Items]
Useful life (years)	10 years
Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Useful life (years)	10 years
Noncompete agreements
Acquired Finite-Lived Intangible Assets [Line Items]
Useful life (years)	5 years
Favorable leasehold interest
Acquired Finite-Lived Intangible Assets [Line Items]
Useful life (years)	5 years
Minimum | Trade names
Acquired Finite-Lived Intangible Assets [Line Items]
Useful life (years)	7 years
Maximum | Trade names
Acquired Finite-Lived Intangible Assets [Line Items]
Useful life (years)	10 years