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Revenue from Contracts with Customers (Details Textual) - USD ($)
 3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Revenue From Contract With Customer [Line Items]    
Legal settlement $ 8,400,000 $ 0
ASC 606    
Revenue From Contract With Customer [Line Items]    
Contingent debit card interchange fees 0  
Contingent incentive fees 0  
Contingent commission $ 0  
Percentage of insurance agency commissions representing total revenue 2.10%  
Percentage of retirement plan consulting fees representing total revenue 0.80%  
Percentage of investment commissions representing total revenue 1.40%  
ASC 606 | Cetera    
Revenue From Contract With Customer [Line Items]    
Contingent investment commissions to be refunded $ 0