Quarterly report pursuant to Section 13 or 15(d)

Furniture, Equipment and Leasehold Improvements, Net - Summary of Furniture, Equipment and Leasehold Improvements, Net (Detail)

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Furniture, Equipment and Leasehold Improvements, Net - Summary of Furniture, Equipment and Leasehold Improvements, Net (Detail) - USD ($)
$ in Thousands
Sep. 30, 2023
Dec. 31, 2022
Property Plant And Equipment Useful Life And Values [Abstract]    
Total cost $ 20,932 $ 17,577
Accumulated depreciation and amortization (13,661) (12,556)
Furniture, equipment and leasehold improvements, net 7,271 5,021
Leasehold Improvements    
Property Plant And Equipment Useful Life And Values [Abstract]    
Total cost 9,439 7,859
Furniture and Equipment    
Property Plant And Equipment Useful Life And Values [Abstract]    
Total cost 10,878 9,213
Artwork    
Property Plant And Equipment Useful Life And Values [Abstract]    
Total cost $ 615 $ 505