Basis of Presentation Additional Information (Details) $ in Thousands	Jun. 30, 2019 USD ($)
Lessee, Lease, Description [Line Items]
Operating Lease, Right-of-Use Asset	$ 47,639
Operating Lease, Liability	51,663
Accounting Standards Update 2016-02 [Member]
Lessee, Lease, Description [Line Items]
Operating Lease, Right-of-Use Asset	38,500
Operating Lease, Liability	$ 41,800