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Summary of Significant Accounting Policies - Schedule of Reclassification out of Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2022 | Mar. 31, 2022 | Jun. 30, 2021 | Mar. 31, 2021 | Jun. 30, 2022 | Jun. 30, 2021
Other comprehensive (loss)/income: |  |  |  |  |  |
Other comprehensive (loss)/income before tax | $ (12,430) |  | $ (44,316) |  | $ (67,516) | $ 38,806
Other Comprehensive Income (Loss), Tax [Abstract] |  |  |  |  |  |
Other comprehensive income/(loss), Provision (Benefit) | (2,611) |  | (9,305) |  | (14,179) | 8,150
Other Comprehensive Income (Loss), Net of Tax [Abstract] |  |  |  |  |  |
Unrealized gains/(losses), After Tax | (11,413) |  | (34,321) |  | (56,497) | 32,452
Less reclassification adjustments, Provision (Benefit) | 1,594 |  | (690) |  | 3,160 | (1,796)
Other comprehensive (loss)/income net of tax | (9,819) | $ (43,518) | (35,011) | $ 65,667 | (53,337) | 30,656
Securities | Available-for-Sale Securities |  |  |  |  |  |
Other comprehensive (loss)/income: |  |  |  |  |  |
Unrealized gain/(losses), Before Tax | (30,176) |  | (36,395) |  | (116,439) | 30,961
Other comprehensive (loss)/income before tax | (30,179) |  | (37,389) |  | (116,446) | 28,975
Other Comprehensive Income (Loss), Tax [Abstract] |  |  |  |  |  |
Unrealized gains/(losses), Provision (Benefit) | (6,337) |  | (7,644) |  | (24,453) | 6,502
Other comprehensive income/(loss), Provision (Benefit) | (6,338) |  | (7,852) |  | (24,454) | 6,084
Other Comprehensive Income (Loss), Net of Tax [Abstract] |  |  |  |  |  |
Unrealized gains/(losses), After Tax | (23,839) |  | (28,751) |  | (91,986) | 24,459
Other comprehensive (loss)/income net of tax | (23,841) |  | (29,537) |  | (91,992) | 22,891
Securities | Held-to-Maturity Securities |  |  |  |  |  |
Other comprehensive (loss)/income: |  |  |  |  |  |
Less reclassification adjustments, Before Tax | 865 |  | (1,653) |  | 842 | (3,810)
Other comprehensive (loss)/income before tax | 865 |  | (1,653) |  | 842 | (3,810)
Other Comprehensive Income (Loss), Tax [Abstract] |  |  |  |  |  |
Less reclassification adjustments, Provision (Benefit) | 181 |  | (347) |  | 177 | (800)
Other comprehensive income/(loss), Provision (Benefit) | 181 |  | (347) |  | 177 | (800)
Other Comprehensive Income (Loss), Net of Tax [Abstract] |  |  |  |  |  |
Less reclassification adjustments, Provision (Benefit) | 684 |  | (1,306) |  | 665 | (3,010)
Other comprehensive (loss)/income net of tax | 684 |  | (1,306) |  | 665 | (3,010)
Securities | Net interest income | Available-for-Sale Securities |  |  |  |  |  |
Other comprehensive (loss)/income: |  |  |  |  |  |
Less reclassification adjustments, Before Tax | 0 |  | (987) |  | 0 | (1,971)
Other Comprehensive Income (Loss), Tax [Abstract] |  |  |  |  |  |
Less reclassification adjustments, Provision (Benefit) | 0 |  | (207) |  | 0 | (415)
Other Comprehensive Income (Loss), Net of Tax [Abstract] |  |  |  |  |  |
Less reclassification adjustments, Provision (Benefit) | 0 |  | (780) |  | 0 | (1,556)
Securities | Other income | Available-for-Sale Securities |  |  |  |  |  |
Other comprehensive (loss)/income: |  |  |  |  |  |
Less reclassification adjustments, Before Tax | (3) |  | (7) |  | (7) | (15)
Other Comprehensive Income (Loss), Tax [Abstract] |  |  |  |  |  |
Less reclassification adjustments, Provision (Benefit) | (1) |  | (1) |  | (1) | (3)
Other Comprehensive Income (Loss), Net of Tax [Abstract] |  |  |  |  |  |
Less reclassification adjustments, Provision (Benefit) | (2) |  | (6) |  | (6) | (12)
Cash Flow Hedges |  |  |  |  |  |
Other comprehensive (loss)/income: |  |  |  |  |  |
Unrealized gain/(losses), Before Tax | 15,729 |  | (7,050) |  | 44,922 | 10,118
Less reclassification adjustments, Before Tax | 1,155 |  | 1,776 |  | 3,166 | 3,523
Other comprehensive (loss)/income before tax | 16,884 |  | (5,274) |  | 48,088 | 13,641
Other Comprehensive Income (Loss), Tax [Abstract] |  |  |  |  |  |
Unrealized gains/(losses), Provision (Benefit) | 3,303 |  | (1,480) |  | 9,433 | 2,125
Less reclassification adjustments, Provision (Benefit) | 243 |  | 374 |  | 665 | 741
Other comprehensive income/(loss), Provision (Benefit) | 3,546 |  | (1,106) |  | 10,098 | 2,866
Other Comprehensive Income (Loss), Net of Tax [Abstract] |  |  |  |  |  |
Unrealized gains/(losses), After Tax | 12,426 |  | (5,570) |  | 35,489 | 7,993
Less reclassification adjustments, Provision (Benefit) | 912 |  | 1,402 |  | 2,501 | 2,782
Other comprehensive (loss)/income net of tax | 13,338 |  | (4,168) |  | 37,990 | 10,775
AOCI Attributable to Parent |  |  |  |  |  |
Other comprehensive (loss)/income: |  |  |  |  |  |
Other comprehensive (loss)/income before tax | (12,430) |  | (44,316) |  | (67,516) | 38,806
Other Comprehensive Income (Loss), Tax [Abstract] |  |  |  |  |  |
Other comprehensive income/(loss), Provision (Benefit) | (2,611) |  | (9,305) |  | (14,179) | 8,150
Other Comprehensive Income (Loss), Net of Tax [Abstract] |  |  |  |  |  |
Other comprehensive (loss)/income net of tax | $ (9,819) |  | $ (35,011) |  | $ (53,337) | $ 30,656

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