Leases Textual (Details) $ in Millions	Jun. 30, 2019 USD ($)	Jan. 01, 2019 USD ($)
Lessee, Lease, Description [Line Items]
Property Subject to or Available for Operating Lease, Number of Units	92
Operating Lease, Right-of-Use Asset	$ 51.5	$ 32.8
Operating Lease, Weighted Average Remaining Lease Term	6 years 11 months 26 days
Operating Lease, Weighted Average Discount Rate, Percent	2.99%
Minimum [Member]
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Renewal Term	1 year
Maximum [Member]
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Renewal Term	10 years