v3.25.4
Medallion Bank Preferred Stock (Non-controlling Interest) - Additional Information (Detail) - USD ($)
$ / shares in Units, $ in Thousands
 12 Months Ended
Jul. 01, 2025
May 29, 2025
Dec. 17, 2019
Jul. 21, 2011
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2021
Changes In Equity And Comprehensive Income Line Items [Line Items]              
Investment, Type [Extensible Enumeration]             Equity Securities [Member]
Carrying amount         $ 0 $ 0  
Capital Purchase Program [Member]              
Changes In Equity And Comprehensive Income Line Items [Line Items]              
US Treasury shares purchased       26,303      
Investment, Type [Extensible Enumeration]       us-gaap:USTreasurySecuritiesMember      
Preferred stock, liquidation preference per share         $ 1,000    
Series F Fixed-to-Floating Rate Non-cumulative Perpetual Preferred Stock [Member]              
Changes In Equity And Comprehensive Income Line Items [Line Items]              
Initial public offering shares     1,840,000        
Preferred stock, aggregate liquidation amount     $ 46,000        
Preferred stock, net of liquidation amount     $ 42,500        
Percentage of dividend payment rate     8.00%        
Percentage of liquidation rate basis     6.46%        
Dividend description of variable rate basis     three-month Term 90-day Secured Overnight Financing Rate, or SOFR,        
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration]     us-gaap:SecuredOvernightFinancingRateSofrMember        
Preferred stock, liquidation preference per share     $ 25        
Redemption charges $ 3,500            
Carrying amount 42,500            
Series E Senior Non-Cumulative Perpetual Preferred Stock [Member] | Capital Purchase Program [Member]              
Changes In Equity And Comprehensive Income Line Items [Line Items]              
Percentage of dividend payment rate         9.00%    
Aggregate purchase price       $ 26,300      
Series G Fixed To Floating Rate Noncumulative Perpetual Preferred Stock [Member]              
Changes In Equity And Comprehensive Income Line Items [Line Items]              
Initial public offering shares   3,100,000          
Preferred stock, aggregate liquidation amount   $ 77,500          
Preferred stock, net of liquidation amount   $ 73,100          
Percentage of dividend payment rate   9.00%          
Percentage of liquidation rate basis   4.94%          
Dividend description of variable rate basis   five-year U.S. Treasury rate plus a spread          
Investment, Variable Interest Rate, Type [Extensible Enumeration]   us-gaap:SecuredOvernightFinancingRateSofrMember          
Preferred stock, liquidation preference per share   $ 25          
Series F Preferred Stock [Member]              
Changes In Equity And Comprehensive Income Line Items [Line Items]              
Redemption price of stock $ 46,000