Leases (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Term of Contract	38 years
Operating lease cost	$ 520
Variable lease cost	261
Total lease cost	781
Cash paid for amounts included in the measurement of operating lease liabilities	435
Right-of-use assets	17,481	$ 0
Current (included in Other in our Balance Sheet)	1,241
Lease liability	$ 16,216
Weighted-average remaining lease term - operating lease (years)	13 years
Weighted - average discount rate - operating leases	5.00%
2019 (remainder)	$ 1,457
2020	1,985
2021	1,952
2022	1,944
2023	1,876
Thereafter	14,357
Total future lease payments	23,571
Less amount representing interest	6,114
Total obligations under operating leases	$ 17,457
Maximum [Member]
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Term of Contract	15 years
Minimum [Member]
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Term of Contract	1 year