Leases - Future Maturities of Lease Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Jan. 01, 2019
Operating Leases
Year 1	$ 7,494
Year 2	7,545
Year 3	7,595
Year 4	7,649
Year 5	7,704
Thereafter	77,854
Total lease payments	115,841
Less: interest	(59,145)
Present value of lease obligations	56,696	$ 58,663
Finance Leases
Year 1	2,357
Year 2	2,357
Year 3	2,437
Year 4	2,453
Year 5	2,453
Thereafter	134,994
Total lease payments	147,051
Less: interest	(119,930)
Present value of lease obligations	$ 27,121	$ 27,010