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Furniture, equipment and leasehold improvements
 12 Months Ended
Dec. 31, 2021
Property, Plant and Equipment [Abstract]  
Furniture, equipment and leasehold improvements Furniture, equipment and leasehold improvements 
(Expressed in thousands)  
 For the Years Ended December 31,
 20212020
Furniture, fixtures and equipment$63,334 $62,860 
Leasehold improvements57,487 55,860 
Total120,821 118,720 
Less accumulated depreciation(92,785)(90,958)
Total$28,036 $27,762 
Depreciation and amortization expense, included in occupancy and equipment costs in the consolidated income statements was $8.0 million, $8.1 million and $7.6 million for the years ended December 31, 2021, 2020 and 2019, respectively.