v3.25.4
Funds Borrowed - Additional Information (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2007
Jun. 30, 2007
Dec. 31, 2025
Jan. 13, 2026
Dec. 31, 2024
Feb. 28, 2024
Dec. 31, 2021
Debt Instrument [Line Items]              
Time deposits     $ 2,089,416        
Time deposits, at or above FDIC Insurance limit     250,000        
Listing services deposits from other financial institutions.     17,200   $ 10,400    
Retail savings deposit balance     $ 3,700   6,000    
Interest Rate [1]     4.16%        
Investment securities     $ 60,183   $ 54,805    
Investment, Type [Extensible Enumeration]             Equity Securities [Member]
Issue of common stock     29,592,592   29,308,182    
Preferred securities repurchased from a third party investor $ 2,000            
Long-term debt [2]     $ 215,987   $ 232,159    
Medallion Capital, Inc. [Member]              
Debt Instrument [Line Items]              
Debt instrument face amount           $ 18,500  
Subsequent Event [Member]              
Debt Instrument [Line Items]              
Line of credit facility maximum borrowing capacity       $ 900,000      
Trust Preferred Securities [Member]              
Debt Instrument [Line Items]              
Maturity date     Sep. 30, 2037        
Aggregate principal amount of unsecured junior subordinated notes   $ 36,100          
Investment, Type [Extensible Enumeration]   Unsecured Debt [Member]          
Sale of preferred securities   $ 35,000          
Issue of common stock   1,083          
Basis spread on variable rate     2.13%        
Preferred securities outstanding     $ 33,000        
Description of variable rate basis     26 basis points        
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration]     Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member]        
Small Business Administration Debentures and Borrowings [Member]              
Debt Instrument [Line Items]              
Interest Rate [1]     3.98%        
Loan commitment term     4 years 6 months        
Commitment fee percentage     1.00%        
Federal reserve discount window and other borrowings [Member]              
Debt Instrument [Line Items]              
Home improvement loans pledged     $ 591,900        
Pledged Securities Advance Rate of Book Value     49.00%        
Line of credit facility maximum borrowing capacity     $ 292,900        
Long-term Line of Credit     $ 50,000        
Interest Rate     3.75%        
Debt instrument outstanding amount     $ 50,000        
Commercial Banks [Member]              
Debt Instrument [Line Items]              
Line of credit facility maximum borrowing capacity     75,000        
Line of credit outstanding     0        
Maximum [Member]              
Debt Instrument [Line Items]              
Time deposits     250,000        
Minimum [Member] | Time Deposits [Member]              
Debt Instrument [Line Items]              
Brokered time deposits     $ 250,000        
Brokerage [Member] | Maximum [Member]              
Debt Instrument [Line Items]              
Average brokerage fee percentage in relation to the maturity of deposits     0.15%        
[1] Weighted average contractual rate as of December 31, 2025
[2] Includes $3.3 million and $3.6 million of deferred financing costs as of December 31, 2025 and 2024. Refer to Note 5 for more details.