Lease Accounting - Components of Lease Expense (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Lessee, Lease, Description [Line Items]
Fixed	$ 3,997	$ 3,995
Variable	76	85
Total	4,073	4,080
Property Operating Expense
Lessee, Lease, Description [Line Items]
Fixed	2,985	2,988
Variable	0	0
Total	2,985	2,988
General and Administrative Expense
Lessee, Lease, Description [Line Items]
Fixed	1,012	1,007
Variable	76	85
Total	$ 1,088	$ 1,092