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Income Taxes - Additional Information (Details) - USD ($)
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Income Tax Examination [Line Items]      
New York City unincorporated business tax rate 4.00%    
UBT statutory rate 4.00% 4.00% 4.00%
Interest expense recorded in income tax expense $ 0 $ (400,000) $ 700,000
Accrued interest payable recorded on the consolidated statements of financial condition 0 0 1,100,000
Accrued penalties recorded on the consolidated statements of financial condition $ 0 0 $ 200,000
Minimum years that remain open and may be subject to examination vary under local law 1 year    
Maximum years that remain open and may be subject to examination vary under local law 7 years    
Valuation allowance $ 3,828,000 3,025,000  
Undistributed earnings of non-U.S. corporate subsidiaries 29,600,000    
Foreign Tax Authority      
Income Tax Examination [Line Items]      
Valuation allowance 3,800,000 3,000,000  
NOL carryforwards 55,100,000 $ 51,000,000  
Pro forma      
Income Tax Examination [Line Items]      
Repatriation of foreign earnings $ 6,400,000