Lease Accounting - Components of Lease Expense (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Lessee, Lease, Description [Line Items]
Fixed	$ 1,248	$ 1,336
Variable	33	26
Total	1,281	1,362
Property Operating Expense
Lessee, Lease, Description [Line Items]
Fixed	912	995
Variable	0	0
Total	912	995
General and Administrative Expense
Lessee, Lease, Description [Line Items]
Fixed	336	341
Variable	33	26
Total	$ 369	$ 367