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Borrowings - Schedule of Borrowings (Details) - USD ($) $ in Thousands | Jun. 30, 2024 | Jun. 30, 2023
--- | --- | ---
Short-term Debt [Line Items] |  |
Borrowings | $ 1,709,789 | $ 1,506,812
Total fixed-rate advances |  |
Short-term Debt [Line Items] |  |
Borrowings | 1,534,789 | 1,281,812
FHLB advances |  |
Short-term Debt [Line Items] |  |
Borrowings | 1,434,789 | 1,281,812
Federal Reserve Bank Term Funding Program ("BTFP") |  |
Short-term Debt [Line Items] |  |
Borrowings | 100,000 | 0
Overnight borrowings |  |
Short-term Debt [Line Items] |  |
Borrowings | 175,000 | 225,000
Overnight borrowings | Line of Credit |  |
Short-term Debt [Line Items] |  |
Borrowings | $ 175,000 | 125,000
Overnight borrowings | Unsecured Debt |  |
Short-term Debt [Line Items] |  |
Borrowings |  | $ 100,000

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