Furniture, Equipment and Leasehold Improvements - Schedule of Furniture, Equipment and Leasehold Improvements, Net (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Property Plant And Equipment [Line Items]
Total Furniture, Equipment and Leasehold Improvements	$ 79,049	$ 78,697
Accumulated Depreciation	(43,711)	(41,550)
Furniture, Equipment and Leasehold Improvements, Net	35,338	37,147
Office Equipment
Property Plant And Equipment [Line Items]
Total Furniture, Equipment and Leasehold Improvements	4,730	4,423
Leasehold Improvements
Property Plant And Equipment [Line Items]
Total Furniture, Equipment and Leasehold Improvements	56,260	56,230
Furniture and Fixtures
Property Plant And Equipment [Line Items]
Total Furniture, Equipment and Leasehold Improvements	$ 18,059	$ 18,044