Right-of-Use Assets and Lease Liabilities - Maturity Analysis of Lease Liabilities (Details) $ in Thousands	Mar. 31, 2019 USD ($)
Finance Lease Liabilities, Payments, Due [Abstract]
2019	$ 105
2020	125
2021	126
2022	128
2023	129
Thereafter	1,375
Total	1,988
Less: Present value discount	(753)
Lease Liabilities	1,235
Operating Lease Liabilities, Payments Due [Abstract]
2019	2,796
2020	3,615
2021	3,599
2022	3,682
2023	3,697
Thereafter	59,336
Total	76,725
Less: Present value discount	(36,500)
Lease Liabilities	40,225
Operating And Finance Lease Liabilities, Payments Due [Abstract]
2019	2,901
2020	3,740
2021	3,725
2022	3,810
2023	3,826
Thereafter	60,711
Total	78,713
Less: Present value discount	(37,253)
Lease Liabilities	$ 41,460