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
Jun. 30, 2020
Dec. 31, 2019
Property Plant And Equipment Useful Life And Values [Abstract]    
Total cost $ 15,185 $ 14,826
Accumulated depreciation and amortization (9,369) (8,811)
Furniture, equipment and leasehold improvements, net 5,816 6,015
Leasehold Improvements    
Property Plant And Equipment Useful Life And Values [Abstract]    
Total cost 7,879 7,783
Furniture and Equipment    
Property Plant And Equipment Useful Life And Values [Abstract]    
Total cost 6,804 6,541
Artwork    
Property Plant And Equipment Useful Life And Values [Abstract]    
Total cost $ 502 $ 502