XML 56 R47.htm IDEA: XBRL DOCUMENT v3.23.3
Revenue from contracts with customers - Additional Information (Details) - USD ($)
$ in Thousands
 9 Months Ended
Sep. 30, 2023
Dec. 31, 2022
Disaggregation of Revenue [Line Items]    
Contract assets (receivables) $ 34,680 $ 32,773
Deferred revenue (payables) $ 1,803 $ 900
Commission From Equity Securities Transactions    
Disaggregation of Revenue [Line Items]    
Revenue settlement period (in days) 2 days  
Commissions From Corporate Bond Transactions    
Disaggregation of Revenue [Line Items]    
Revenue settlement period (in days) 1 day  
Mutual fund and insurance income    
Disaggregation of Revenue [Line Items]    
Revenue settlement period (in days) 90 days  
Advisory fees    
Disaggregation of Revenue [Line Items]    
Revenue settlement period (in days) 90 days  
Investment banking - capital markets    
Disaggregation of Revenue [Line Items]    
Revenue settlement period (in days) 90 days  
Bank deposit sweep income    
Disaggregation of Revenue [Line Items]    
Revenue settlement period (in days) 30 days