Leases (Details) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2019 USD ($)	Jun. 30, 2019 USD ($)
Lessee, Lease, Description [Line Items]
Operating Lease, Weighted Average Remaining Lease Term	2 years 9 months 18 days	2 years 9 months 18 days
Operating Lease, Weighted Average Discount Rate, Percent	4.50%	4.50%
Operating Lease, Cost	$ 2.2	$ 4.5
Operating Lease, Payments		$ 5.1
Minimum
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Term of Contract	1 year	1 year
Maximum
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Term of Contract	4 years	4 years