XML 48 R38.htm IDEA: XBRL DOCUMENT v3.24.1.u1
Loans Receivable - Narrative (Details)
3 Months Ended 6 Months Ended
Mar. 31, 2024
USD ($)
agreement
Mar. 31, 2024
USD ($)
portfolioSegment
Sep. 30, 2023
USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Number of portfolio segments for loans held for investment | portfolioSegment   2  
Loans held for sale $ 2,993,658,000 $ 2,993,658,000 $ 0
Accrued interest receivables for loans 103,137,000 103,137,000 77,349,000
Loans pledged to secure borrowings from the Federal Home Loan Bank $ 9,131,125,000 9,131,125,000 8,941,201,000
Number of pledge agreements | agreement 2    
Gross loans $ 22,598,153,000 22,598,153,000 19,648,504,000
Nonaccrual interest income recognized   435,000  
Impaired, interest income on accrual accrual and performed loans   1,347,000  
Loan modified, subsequent default   0  
FRB Advances      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Short-term debt 0 0  
FRB Advances | Asset Pledged as Collateral      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 3,681,859,000 3,681,859,000  
FHLB of San Francisco | FHLB Advances | Asset Pledged as Collateral      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 1,757,206,000 1,757,206,000  
Commercial loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 12,882,231,000 12,882,231,000 12,094,294,000
Commercial loans | Commercial & industrial      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 2,290,452,000 2,290,452,000 $ 2,321,717,000
Commercial loans | Commercial & industrial | 31 days past due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Loan modified, accumulated amortized cost $ 0 $ 0