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Derivative Instruments - Hedge Derivatives (Details) - USD ($) | 1 Months Ended | 12 Months Ended
--- | --- | ---
Apr. 30, 2022 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Derivative [Line Items] |  |  |  |  |
Net gain on cash flow hedges reclassified from other comprehensive income into net income, net of tax |  |  | $ (8,999,000) | $ (9,689,000) | $ (9,975,000)
Amortization |  |  | 4,600,000 | 3,300,000 | 2,800,000
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months |  |  | 0 |  |
Hedging derivative | Fair value hedge |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Notional |  |  | 4,373,426,000 | 3,287,139,000 |
Amortization |  |  | 329,000 | 645,000 | 1,900,000
Fair Value Hedges, Net | [1] |  | 45,636,000 | 43,706,000 |
Hedging derivative | Fair value hedge | Federal Funds Rate |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Forecasted Notional Amount of Interest Rate Derivatives |  |  | 317,900,000 |  |
Hedging derivative | Fair value hedge | Secured Overnight Financing Rate |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Forecasted Notional Amount of Interest Rate Derivatives |  |  | 4,100,000,000 |  |
Hedging derivative | Fair value hedge | Federal Home Loan Bank Advances |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Gain (Loss) on Fair Value Hedges Recognized in Earnings |  |  | (23,426,000) | 1,998,000 | 0
Increase (Decrease) in Fair Value of Hedged Item in Interest Rate Fair Value Hedge |  |  | 23,426,000 | (1,998,000) | 0
Fair Value Hedges, Net |  |  | (21,428,000) |  |
Hedging derivative | Fair value hedge | Federal Home Loan Bank Certificates and Obligations (FHLB) |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Derivative Instruments and Hedges, Assets |  |  | 1,196,428,000 | 1,173,002,000 |
Fair Value Hedging Adjustment |  |  | 21,428,000 | (1,998,000) |
Hedging derivative | Fair value hedge | Securities |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Derivative Instruments and Hedges, Assets |  |  | 3,905,016,000 | 2,074,621,000 |
Fair Value Hedging Adjustment |  |  | (67,064,000) | (41,708,000) |
Gain (Loss) on Fair Value Hedges Recognized in Earnings |  |  | 25,356,000 | (14,348,000) | 80,728,000
Increase (Decrease) in Fair Value of Hedged Item in Interest Rate Fair Value Hedge |  |  | (25,356,000) | 14,348,000 | (80,728,000)
Asset derivatives | Hedging derivative | Cash flow hedge |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Unrealized Gain (Loss) in Accumulated Other Comprehensive Income |  |  | (19,902,000) | (7,414,000) | $ 1,002,000
Notional |  |  | 1,750,000,000 | 1,750,000,000 |
Cash Flow Hedges Derivative Instruments at Fair Value, Net |  |  | $ 32,818,000 | 74,797,000 |
Asset derivatives | Hedging derivative | Fair value hedge | Federal Home Loan Bank Advances |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Pay Rate (as percent) |  |  | 0.00% |  |
Notional |  |  | $ 0 | 750,000,000 |
Derivative, Underlying Basis |  |  | SOFR |  |
Fair Value Hedge Assets | [1] |  | $ 0 | 3,654,000 |
Derivative Asset, Statement of Financial Position [Extensible Enumeration] |  |  | Other assets |  |
Asset derivatives | Hedging derivative | Fair value hedge | Securities |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Pay Rate (as percent) |  |  | 3.25% |  |
Gain (Loss) on Fair Value Hedges Recognized in Earnings |  | $ 986,000 |  |  |
Notional |  |  | $ 3,198,426,000 | 543,061,000 |
Weighted Average Remaining Maturity Derivative |  |  | 10 years 4 months 9 days |  |
Derivative, Underlying Basis |  |  | Federal Funds/SOFR |  |
Fair Value Hedge Assets | [1] |  | $ 67,064,000 | $ 42,983,000 |
Derivative Asset, Statement of Financial Position [Extensible Enumeration] |  |  | Other assets | Other assets |
Gain (Loss) on Fair Value Hedges to be Recognized in Earnings |  | 5,500,000 |  |  |
Terminated Fair Value Amount of Interest Rate Derivatives |  | 14,300,000 |  |  |
Terminated Notional Amount of Interest Rate Derivatives |  | $ 164,300,000 |  |  |
Asset derivatives | Hedging derivative | Interest Rate Floor |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Receive Rate |  |  | N/A |  |
Notional |  |  | $ 875,000,000 | $ 875,000,000 |
Cash Flow Hedges Derivative Instruments at Fair Value, Net |  |  | $ 15,566,000 | $ 36,483,000 |
Weighted Average Remaining Maturity Derivative |  |  | 2 years 10 months 2 days |  |
Derivative, Type of Interest Received |  |  | 4.00%-4.50% minus USD-Term SOFR 1M |  |
Derivative Asset, Statement of Financial Position [Extensible Enumeration] |  |  | Other assets | Other assets |
Asset derivatives | Hedging derivative | Interest Rate Contract |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Receive Rate |  |  | USD-Term SOFR 1M minus 6.75%-7.00% |  |
Notional |  |  | $ 875,000,000 | $ 875,000,000 |
Cash Flow Hedges Derivative Instruments at Fair Value, Net |  |  | $ 17,252,000 | $ 38,314,000 |
Weighted Average Remaining Maturity Derivative |  |  | 2 years 10 months 2 days |  |
Derivative, Type of Interest Received |  |  | 4.25%-4.75% minus USD-Term SOFR 1M |  |
Derivative Asset, Statement of Financial Position [Extensible Enumeration] |  |  | Other assets | Other assets |
Liability derivatives | Hedging derivative | Fair value hedge | Federal Home Loan Bank Advances |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Pay Rate (as percent) |  |  | 3.48% |  |
Weighted Average Remaining Maturity Derivative |  |  | 2 years 8 months 23 days |  |
Derivative, Underlying Basis |  |  | SOFR |  |
Fair Value Hedge Liabilities | [1] |  | $ (21,428,000) | $ (1,656,000) |
Forecasted Notional Amount of Interest Rate Derivatives |  |  | $ 1,175,000,000 | 425,000,000 |
Derivative Liability, Statement of Financial Position [Extensible Enumeration] |  |  | Other liabilities |  |
Liability derivatives | Hedging derivative | Fair value hedge | Securities |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Notional |  |  | $ 0 | 1,569,078,000 |
Derivative, Underlying Basis |  |  | Federal Funds/SOFR |  |
Fair Value Hedge Liabilities | [1] |  | $ 0 | $ (1,275,000) |
Derivative Liability, Statement of Financial Position [Extensible Enumeration] |  |  | Other liabilities |  |
Securities | Hedging derivative |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Notional |  |  | $ 300,000,000 |  |
[1] | The variation margin payments for derivatives cleared through central clearing houses are characterized as settlements. At December 31, 2024 and 2023, the notional amount of fair value derivatives hedges cleared through clearing houses is $3.0 billion and $2.0 billion with a fair value that approximates zero due to $72.7 million and $4.0 million in variation margin payments.

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