Business Acquisitions - Acquired Intangible Assets (Details) - May. 18, 2015 - Kay Flow Industries, Inc. - USD ($) $ in Thousands		Total
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived Intangible Assets Acquired		$ 53,091
Useful life (years)	[1]	10 years
Unpatented technology
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived Intangible Assets Acquired		$ 13,400
Useful life (years)		10 years
Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived Intangible Assets Acquired		$ 22,800
Useful life (years)		10 years
Trade names
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived Intangible Assets Acquired		$ 15,500
Noncompete agreements
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived Intangible Assets Acquired		$ 1,342
Useful life (years)		5 years
Favorable leasehold interest
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived Intangible Assets Acquired		$ 49
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

[1] weighted average number of years