Commitments and Contingencies (Narrative) (Details) $ in Thousands		12 Months Ended
	Jan. 01, 2019 lease	Dec. 31, 2019 USD ($) lease	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Sep. 30, 2019 USD ($)
Lessee, Lease, Description [Line Items]
Number of operating lease contracts | lease	11	8
Number of finance lease contracts | lease		6
Operating lease right-of-use assets		$ 14,351
Operating lease liabilities		$ 9,133			$ 9,133
Remaining lease term		42 years 2 months 12 days
Weighted average discount rate, percent		7.34%
Operating lease payments		$ 800
Operating lease costs		$ 1,000
Rent expense			$ 900	$ 800
Minimum
Lessee, Lease, Description [Line Items]
Renewal term		12 years 9 months 18 days
Maximum
Lessee, Lease, Description [Line Items]
Renewal term		87 years 8 months 12 days
Medical Office Buildings
Lessee, Lease, Description [Line Items]
Number of operating lease contracts | lease	3