XML 81 R64.htm IDEA: XBRL DOCUMENT v3.22.2.2
Fair Value Measurements - Fair Value by Balance Sheet Grouping (Details) - USD ($)
$ in Thousands
Sep. 30, 2022
Sep. 30, 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale securities, at fair value $ 2,051,037 $ 2,138,259
Held-to-maturity securities 463,299 366,025
Carrying Amount    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale securities, at fair value 2,051,037 2,138,259
Held-to-maturity securities 463,299 366,025
Carrying Amount | Level 1    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Cash and cash equivalents 683,965 2,090,809
Carrying Amount | Level 2    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
FHLB and FRB stock 95,073 102,863
Time deposits 3,338,043 3,434,087
FHLB advances and other borrowings 2,125,000 1,720,000
Carrying Amount | Level 2 | Client swap program hedges    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Other assets 67,260 10,983
Other liabilities 67,260 10,983
Carrying Amount | Level 2 | Commercial loan fair value hedges    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Other assets 2,517 0
Other liabilities 0 2,177
Carrying Amount | Level 2 | Mortgage loan fair value hedges    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Other assets 36,765 0
Other liabilities 0 1,641
Carrying Amount | Level 2 | Borrowings cash flow hedges    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Other assets 179,945 42,442
Carrying Amount | Level 2 | U.S. government and agency securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale securities, at fair value 39,354 61,779
Carrying Amount | Level 2 | Asset-backed securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale securities, at fair value 767,001 1,078,681
Carrying Amount | Level 2 | Municipal bonds    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale securities, at fair value 34,962 39,984
Carrying Amount | Level 2 | Corporate debt securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale securities, at fair value 313,757 350,988
Carrying Amount | Level 2 | Agency pass-through certificates    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale securities, at fair value 895,963 606,827
Held-to-maturity securities 463,299 366,025
Carrying Amount | Level 3    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Loans receivable 16,113,564 13,833,570
Estimated Fair Value    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale securities, at fair value 2,051,037 2,138,259
Held-to-maturity securities 406,860 379,547
Estimated Fair Value | Level 1    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Cash and cash equivalents 683,965 2,090,809
Estimated Fair Value | Level 2    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
FHLB and FRB stock 95,073 102,863
Time deposits 3,249,169 3,382,206
FHLB advances and other borrowings 1,940,813 1,692,412
Estimated Fair Value | Level 2 | Client swap program hedges    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Other assets 67,260 10,983
Other liabilities 67,260 10,983
Estimated Fair Value | Level 2 | Commercial loan fair value hedges    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Other assets 2,517 0
Other liabilities 0 2,177
Estimated Fair Value | Level 2 | Mortgage loan fair value hedges    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Other assets 36,765 0
Other liabilities 0 1,641
Estimated Fair Value | Level 2 | Borrowings cash flow hedges    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Other assets 179,945 42,442
Estimated Fair Value | Level 2 | U.S. government and agency securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale securities, at fair value 39,354 61,779
Estimated Fair Value | Level 2 | Asset-backed securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale securities, at fair value 767,001 1,078,681
Estimated Fair Value | Level 2 | Municipal bonds    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale securities, at fair value 34,962 39,984
Estimated Fair Value | Level 2 | Corporate debt securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale securities, at fair value 313,757 350,988
Estimated Fair Value | Level 2 | Agency pass-through certificates    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale securities, at fair value 895,963 606,827
Held-to-maturity securities 406,860 379,547
Estimated Fair Value | Level 3    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Loans receivable $ 15,417,635 $ 14,279,725