Lease Accounting - Components of Lease Expense (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Lessee, Lease, Description [Line Items]
Fixed	$ 3,771	$ 3,997
Variable	26	76
Total	3,797	4,073
Property Operating Expense
Lessee, Lease, Description [Line Items]
Fixed	2,734	2,985
Variable	2	0
Total	2,736	2,985
General and Administrative Expense
Lessee, Lease, Description [Line Items]
Fixed	1,037	1,012
Variable	24	76
Total	$ 1,061	$ 1,088