Leases - Land Lease Obligations (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2019 USD ($)
Lease costs
Operating Lease Costs	$ 202
Total	202
Operating cash flows from operating leases	198
Right-of-use assets obtained in exchange for new operating lease liabilities	$ 19,672
Weighted average remaining lease term (in years)	37 years 1 month 6 days
Weighted-average discount rate - operating leases	4.13%
Maturity Analysis of Lease Liabilities
Lease Payment 2019 (remaining)	$ 934
Lease Payment 2020	1,245
Lease Payment 2021	1,191
Lease Payment 2022	965
Lease Payment 2023	965
Lease Payment Thereafter	35,883
Lease Payments Total	41,183
Imputed Interest 2019 (remaining)	(601)
Imputed Interest 2020	(785)
Imputed Interest 2021	(766)
Imputed Interest 2022	(753)
Imputed Interest 2023	(744)
Imputed Interest Thereafter	(17,983)
Imputed Interest Total	(21,632)
Total Lease Liabilities 2019 (remaining)	333
Total Lease Liabilities 2020	460
Total Lease Liabilities 2021	425
Total Lease Liabilities 2022	212
Total Lease Liabilities 2023	221
Total Lease Liabilities Thereafter	17,900
Total Lease Liabilities	$ 19,551