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Derivative Instruments - Hedge Derivatives (Details) - USD ($) | 3 Months Ended |
--- | --- | ---
Mar. 31, 2022 | Mar. 31, 2021 | Dec. 31, 2021
Derivative [Line Items] |  |  |
Net (gain) loss on cash flow hedges reclassified from other comprehensive income into net income, net of tax | $ (2,509,000) | $ 504,000 |
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months | 9,900,000 |  |
Cash flow hedge | Hedging derivative | Asset derivatives |  |  |
Derivative [Line Items] |  |  |
Derivative Asset, Statement of Financial Position |  |  |
Fair value hedge | Hedging derivative |  |  |
Derivative [Line Items] |  |  |
Forecasted Notional Amount | 1,031,490,000 |  | $ 1,031,490,000
Fair Value Hedge Assets | 24,167,000 |  | (24,672,000)
Fair value hedge | Hedging derivative | Securities |  |  |
Derivative [Line Items] |  |  |
Gain (Loss) on Fair Value Hedges Recognized in Earnings | 48,839,000 | 34,766,000 |
Increase (Decrease) in Fair Value of Hedged Item in Interest Rate Fair Value Hedge | (48,839,000) | (34,766,000) |
Derivative Instruments and Hedges, Assets | 1,113,017,000 |  | 1,165,773,000
Fair Value Hedging Adjustment | (24,167,000) |  | 24,672,000
Fair value hedge | Hedging derivative | Securities | Asset derivatives |  |  |
Derivative [Line Items] |  |  |
Forecasted Notional Amount | $ 559,820,000 |  | 559,820,000
Derivative Asset, Statement of Financial Position |  |  |
Weighted Average Remaining Maturity | 5 years 21 days |  |
Pay Rate (as percent) | 0.59% |  |
Derivative, Type of Interest Rate Paid on Swap | Federal Funds |  |
Fair Value Hedge Assets | $ 36,454,000 |  | 15,109,000
Fair value hedge | Hedging derivative | Securities | Liability derivatives |  |  |
Derivative [Line Items] |  |  |
Forecasted Notional Amount | $ 471,670,000 |  | $ 471,670,000
Derivative Asset, Statement of Financial Position |  |  |
Weighted Average Remaining Maturity | 4 years 9 months 14 days |  |
Pay Rate (as percent) | 3.08% |  |
Derivative, Type of Interest Rate Paid on Swap | 3 month LIBOR |  |
Fair Value Hedge Assets | $ (12,287,000) |  | $ (39,781,000)
Fair value hedge | Hedging derivative | Securities | LIBOR |  |  |
Derivative [Line Items] |  |  |
Forecasted Notional Amount | 471,700,000 |  |
Fair value hedge | Hedging derivative | Securities | Federal Funds Rate |  |  |
Derivative [Line Items] |  |  |
Forecasted Notional Amount | 559,800,000 |  |
Fair value hedge | Hedging derivative | Loans |  |  |
Derivative [Line Items] |  |  |
Amortization expense, reduction to interest income on loans | $ 639,000 | $ 924,000 |

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