Operating Leases - Lease Cost (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2021 USD ($)
Lessee, Lease, Description [Line Items]
Operating Lease, Cost	$ 3,061
Operating Lease, Payments	3,070
Office Space
Lessee, Lease, Description [Line Items]
Operating Lease, Cost	2,913
Operating Lease, Payments	$ 2,930
Operating Lease, Weighted Average Remaining Lease Term	4 years
Operating Lease, Weighted Average Discount Rate, Percent	3.00%
Ground Leases
Lessee, Lease, Description [Line Items]
Operating Lease, Cost	$ 23
Operating Lease, Payments	$ 15
Operating Lease, Weighted Average Remaining Lease Term	43 years
Operating Lease, Weighted Average Discount Rate, Percent	4.50%
Office Equipment
Lessee, Lease, Description [Line Items]
Operating Lease, Cost	$ 125
Operating Lease, Payments	$ 125
Operating Lease, Weighted Average Remaining Lease Term	2 years 8 months 12 days
Operating Lease, Weighted Average Discount Rate, Percent	3.00%