Goodwill and Other Intangible Assets (Details Textual) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Goodwill [Line Items]
Goodwill, Purchase Accounting Adjustments	$ 3.2
Goodwill and Other Intangible Assets (Textual) [Abstract]
Amortization expense for intangible assets	21.2	$ 18.2
Future Amortization Expense Year 2015	40.7
Future Amortization Expense Year 2016	35.3
Future Amortization Expense Year 2017	30.6
Future Amortization Expense Year 2018	26.7
Future Amortization Expense Year 2019	$ 22.6