Leases - Details of Rent Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Lessee, Lease, Description [Line Items]
Variable rent expense	$ 0	$ 0	$ 0
Total rent expense	1,492	1,467	1,418
Ground Rent
Lessee, Lease, Description [Line Items]
Fixed rent expense	981	957	905
Office Rent
Lessee, Lease, Description [Line Items]
Fixed rent expense	$ 511	$ 510	$ 512