Leases - Supplemental Balance Sheet Information (Details) $ in Thousands	Mar. 31, 2019 USD ($)
Leases [Abstract]
Operating lease right-of use assets	$ 179,028
Finance lease right-of use assets	682
Total Lease Right-of Use Assets	179,710
Operating lease liabilities	198,091
Finance lease liabilities	1,344
Total Lease Liabilities	$ 199,435