Commitments and Contingencies (Narrative) (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2020 USD ($) lease	Mar. 31, 2019 USD ($)	Dec. 31, 2019 USD ($)
Lessee, Lease, Description [Line Items]
Number of operating lease contracts | lease	8
Number of finance lease contracts | lease	6
Operating lease right-of-use assets	$ 14,335		$ 14,351
Operating lease liabilities	$ 9,139		$ 9,133
Remaining lease term	42 years 4 months 24 days
Weighted average discount rate, percent	7.30%
Operating lease payments	$ 200
Operating lease liability	$ 200	$ 200
Minimum
Lessee, Lease, Description [Line Items]
Renewal term	13 years
Maximum
Lessee, Lease, Description [Line Items]
Renewal term	88 years