Leases - Maturity (Details) $ in Thousands	Mar. 31, 2019 USD ($)
Finance leases
April 1 to December 31, 2019	$ 694
2020	925
2021	925
2022	925
2023	925
Thereafter	3,923
Total undiscounted lease payments	8,317
Less imputed interest	(1,462)
Total lease liabilities	6,855
Operating leases
April 1 to December 31, 2019	2,346
2020	1,979
2021	1,906
2022	1,625
2023	1,587
Thereafter	48,437
Total undiscounted lease payments	57,880
Less imputed interest	(33,773)
Total lease liabilities	24,107
Total
April 1 to December 31, 2019	3,040
2020	2,904
2021	2,831
2022	2,550
2023	2,512
Thereafter	52,360
Total undiscounted lease payments	66,197
Less imputed interest	(35,235)
Total lease liabilities	$ 30,962