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Investment Securities - Schedule of Unrealized Losses and Estimated Fair Values (Details) - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023
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Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items] |  |
Estimated Fair Value, Less Than 12 Months | $ 274,518 | $ 15,380
Available For Sale Securities Continuous Unrealized Income Loss Position Less Than Twelve Months Aggregate Gain Losses | (4,693) | (111)
Estimated Fair Value, 12 Months or More | 840,467 | 1,018,290
SecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLosses | (189,855) | (193,924)
Securities Continuous Unrealized Loss Position Fair Value | 1,114,985 | 1,033,670
SecuritiesContinuousUnrealizedLossPositionAggregateLosses | (194,548) | (194,035)
US States and Political Subdivisions Debt Securities [Member] |  |
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items] |  |
Estimated Fair Value, Less Than 12 Months | 1,104 | 2,641
Available For Sale Securities Continuous Unrealized Income Loss Position Less Than Twelve Months Aggregate Gain Losses | (11) | (62)
Estimated Fair Value, 12 Months or More | 28,097 | 26,887
SecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLosses | (3,218) | (3,377)
Securities Continuous Unrealized Loss Position Fair Value | 29,201 | 29,528
SecuritiesContinuousUnrealizedLossPositionAggregateLosses | (3,229) | (3,439)
ERROR in label resolution. |  |
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items] |  |
Estimated Fair Value, Less Than 12 Months | 0 |
Available For Sale Securities Continuous Unrealized Income Loss Position Less Than Twelve Months Aggregate Gain Losses | 0 |
Estimated Fair Value, 12 Months or More | 584 |
SecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLosses | (16) |
Securities Continuous Unrealized Loss Position Fair Value | 584 |
SecuritiesContinuousUnrealizedLossPositionAggregateLosses | (16) |
Corporate Securities [Member] |  |
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items] |  |
Estimated Fair Value, Less Than 12 Months | 9,701 | 11,416
Available For Sale Securities Continuous Unrealized Income Loss Position Less Than Twelve Months Aggregate Gain Losses | (506) | (45)
Estimated Fair Value, 12 Months or More | 17,321 | 21,426
SecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLosses | (1,930) | (3,574)
Securities Continuous Unrealized Loss Position Fair Value | 27,022 | 32,842
SecuritiesContinuousUnrealizedLossPositionAggregateLosses | (2,436) | (3,619)
Foreign Government Debt |  |
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items] |  |
Estimated Fair Value, Less Than 12 Months |  | 199
Available For Sale Securities Continuous Unrealized Income Loss Position Less Than Twelve Months Aggregate Gain Losses |  | (1)
Estimated Fair Value, 12 Months or More |  | 765
SecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLosses |  | (35)
Securities Continuous Unrealized Loss Position Fair Value |  | 964
SecuritiesContinuousUnrealizedLossPositionAggregateLosses |  | (36)
Mortgage - Backed Securities - Residential [Member] | Obligations of U.S. Government [Member] |  |
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items] |  |
Estimated Fair Value, Less Than 12 Months | 242 | 0
Available For Sale Securities Continuous Unrealized Income Loss Position Less Than Twelve Months Aggregate Gain Losses | (1) | 0
Estimated Fair Value, 12 Months or More | 3,002 | 3,395
SecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLosses | (431) | (322)
Securities Continuous Unrealized Loss Position Fair Value | 3,244 | 3,395
SecuritiesContinuousUnrealizedLossPositionAggregateLosses | (432) | (322)
Mortgage - Backed Securities - Residential [Member] | Obligations of U.S. Government-Sponsored Enterprises [Member] |  |
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items] |  |
Estimated Fair Value, Less Than 12 Months | 4,759 | 1,124
Available For Sale Securities Continuous Unrealized Income Loss Position Less Than Twelve Months Aggregate Gain Losses | (56) | (3)
Estimated Fair Value, 12 Months or More | 497,445 | 643,735
SecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLosses | (111,839) | (115,367)
Securities Continuous Unrealized Loss Position Fair Value | 502,204 | 644,859
SecuritiesContinuousUnrealizedLossPositionAggregateLosses | (111,895) | (115,370)
Mortgage - Backed Securities - Commercial [Member] | Obligations of U.S. Government [Member] |  |
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items] |  |
Estimated Fair Value, Less Than 12 Months | 258,712 | 0
Available For Sale Securities Continuous Unrealized Income Loss Position Less Than Twelve Months Aggregate Gain Losses | (4,119) | 0
Estimated Fair Value, 12 Months or More | 274,358 | 300,642
SecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLosses | (68,212) | (66,956)
Securities Continuous Unrealized Loss Position Fair Value | 533,070 | 300,642
SecuritiesContinuousUnrealizedLossPositionAggregateLosses | (72,331) | (66,956)
Mortgage - Backed Securities - Commercial [Member] | Obligations of U.S. Government-Sponsored Enterprises [Member] |  |
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items] |  |
Estimated Fair Value, Less Than 12 Months | 0 | 0
Available For Sale Securities Continuous Unrealized Income Loss Position Less Than Twelve Months Aggregate Gain Losses | 0 | 0
Estimated Fair Value, 12 Months or More | 0 | 2,160
SecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLosses | 0 | (30)
Securities Continuous Unrealized Loss Position Fair Value | 0 | 2,160
SecuritiesContinuousUnrealizedLossPositionAggregateLosses | 0 | (30)
Other Government - Sponsored Enterprises [Member] | Obligations of U.S. Government-Sponsored Enterprises [Member] |  |
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items] |  |
Estimated Fair Value, Less Than 12 Months | 0 | 0
Available For Sale Securities Continuous Unrealized Income Loss Position Less Than Twelve Months Aggregate Gain Losses | 0 | 0
Estimated Fair Value, 12 Months or More | 19,660 | 19,280
SecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLosses | (4,209) | (4,263)
Securities Continuous Unrealized Loss Position Fair Value | 19,660 | 19,280
SecuritiesContinuousUnrealizedLossPositionAggregateLosses | $ (4,209) | $ (4,263)

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