Leases - Undiscounted Cash Flows on an Annual Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Operating
Year 1	$ 8,281
Year 2	8,353
Year 3	8,264
Year 4	7,898
Year 5	7,828
Thereafter	130,052
Total	170,676
Present value adjustments	(67,098)
Lease liabilities	103,578	$ 0
Finance
Year 1	232
Year 2	232
Year 3	241
Year 4	255
Year 5	255
Thereafter	35,062
Total	36,277
Present value adjustments	(31,484)
Lease liabilities	4,793
Total
Year 1	8,513
Year 2	8,585
Year 3	8,505
Year 4	8,153
Year 5	8,083
Thereafter	165,114
Total	206,953
Present value adjustments	(98,582)
Lease liabilities	$ 108,371