v3.26.1
ACQUISITIONS - NARRATIVE (Details)
$ in Thousands
12 Months Ended
Jan. 23, 2026
USD ($)
Sep. 30, 2025
USD ($)
Dec. 07, 2023
USD ($)
loanPortfolio
Aug. 23, 2023
USD ($)
Jun. 30, 2026
USD ($)
segment
Jun. 30, 2025
USD ($)
Jun. 30, 2024
USD ($)
May 02, 2026
USD ($)
Apr. 22, 2026
USD ($)
Jun. 30, 2023
USD ($)
Business Combination [Line Items]                    
Number of loan portfolio segments     2   5          
Loans—net of allowance for credit losses         $ 25,595,403 $ 21,049,610        
Allowance for loan and lease losses         347,375 290,049 $ 260,542     $ 166,680
Other assets         16,941 17,734        
Accounts payable and other liabilities—Derivative instruments         52,509 68,498        
Gain on acquisition         0 0 92,397      
Net income         490,372 432,908 450,008      
Capital One, National Association                    
Business Combination [Line Items]                    
Deposits acquired                 $ 3,200,000  
Jenius Bank                    
Business Combination [Line Items]                    
Deposits acquired               $ 2,300,000    
Verdant Commercial Capital, LLC                    
Business Combination [Line Items]                    
Business combination, loans and leases acquired   $ 1,200,000                
Business combination, total consideration   566,891                
Amount paid to settle certain debt of Verdant   500,000                
Adjusted Verdant book value   36,100                
Accounts payable and other liabilities—Contingent Consideration   $ 30,810                
Business combination, contingent consideration, earning period   4 years                
Net revenue         97,500          
Proforma certain adjustments   $ 1,300                
Verdant Commercial Capital, LLC | Verdant                    
Business Combination [Line Items]                    
Net income         4,100          
Verdant Commercial Capital, LLC | Minimum                    
Business Combination [Line Items]                    
Business combination, contingent consideration, liability   0                
Verdant Commercial Capital, LLC | Maximum                    
Business Combination [Line Items]                    
Business combination, contingent consideration, liability   50,000                
Commercial Real Estate                    
Business Combination [Line Items]                    
Allowance for loan and lease losses         $ 121,552 $ 113,804 $ 87,780     $ 72,755
PCD Portfolio Segment | Verdant Commercial Capital, LLC                    
Business Combination [Line Items]                    
Loans—net of allowance for credit losses   202,865                
Non-credit-related discount   342                
Allowance for loan and lease losses   $ 7,795                
Marine Floor Financing Loans                    
Business Combination [Line Items]                    
Consideration transferred       $ 52,000            
Intangible and Other Assets                    
Business Combination [Line Items]                    
Consideration transferred       $ 2,000            
Real Estate Loan Portfolios | Commercial Real Estate                    
Business Combination [Line Items]                    
Loans—net of allowance for credit losses     $ 1,300,000              
Unpaid principal balance, fair value     901,500              
Non-credit-related discount     306,800              
Gain on acquisition     92,400              
Real Estate Loan Portfolios | Commercial Real Estate | Interest Rate Swap                    
Business Combination [Line Items]                    
Other assets     109,000              
Accounts payable and other liabilities—Derivative instruments     104,400              
Real Estate Loan Portfolios | PCD Portfolio Segment                    
Business Combination [Line Items]                    
Loans—net of allowance for credit losses     341,301              
Non-credit-related discount     100,686              
Allowance for loan and lease losses     $ 70,097              
Multi-Building Commercial Office Complex                    
Business Combination [Line Items]                    
Consideration transferred $ 125,000