Acquisition - Intangible Assets Acquired (Details) - Pine State $ in Millions	Jun. 06, 2016 USD ($)
Acquired Finite-Lived Intangible Assets [Line Items]
Total intangible assets	$ 17.2
Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Total intangible assets	14.1
Trade names
Acquired Finite-Lived Intangible Assets [Line Items]
Total intangible assets	1.0
Non-competition agreements
Acquired Finite-Lived Intangible Assets [Line Items]
Total intangible assets	$ 2.1
Useful Life in Years	5 years
Minimum | Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Useful Life in Years	10 years
Minimum | Trade names
Acquired Finite-Lived Intangible Assets [Line Items]
Useful Life in Years	1 year
Maximum | Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Useful Life in Years	12 years
Maximum | Trade names
Acquired Finite-Lived Intangible Assets [Line Items]
Useful Life in Years	2 years