Property, Plant and Equipment (Details Textual) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Property, Plant and Equipment [Abstract]
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	$ 28.2	$ 14.8
Operating Leases, Rent Expense, Net	$ 18.0	$ 16.8	$ 14.3