Commitments and Contingencies Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Commitments and Contingencies Disclosure [Abstract]
Rent Expense	$ 12.7	$ 11.5	$ 9.8
Purchase Obligation	52.2
Purchase Obligation, Due in Next Twelve Months	$ 50.2
Standard Product Warrant Description	30 days
Duration of Limited Warranty	6 months