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v3.23.2

Borrowings - Narrative (Details) $ in Thousands | Jun. 30, 2023 USD ($) securities | Dec. 31, 2022 USD ($)
--- | --- | ---
Debt Instrument [Line Items] |  |
FHLB and FRB borrowings | $ 2,260,000 | $ 865,000
Percent of assets | 25.00% |
Percent outstanding advances | 100.00% |
Unsecured Federal Funds lines |  |
Debt Instrument [Line Items] |  |
FHLB and FRB borrowings | $ 0 | 0
Qualifying Loans |  |
Debt Instrument [Line Items] |  |
Asset balance used to determine maximum borrowing capacity from federal reserve bank | $ 732,400 |
FRB Discount Window |  |
Debt Instrument [Line Items] |  |
Percent of qualifying assets (up to) | 99.00% |
Securities pledged as collateral | $ 220,700 |
Investment securities, pledged | $ 1,710,000 |
Number of securities pledged as collateral | securities | 87 |
Mortgage Loans on Real Estate |  |
Debt Instrument [Line Items] |  |
Pledged as collateral, FHLB | $ 8,120,000 | $ 8,080,000

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