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Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2022 | Mar. 31, 2021
Changes in accumulated other comprehensive income (loss) by component, net of tax |  |
Beginning balance | $ 1,319,112 | $ 1,270,069
Unrealized gains (losses) on debt securities available for sale: |  |
Unrealized holding gains (losses) on debt securities available for sale, Tax Effect | (29,726) | (11,993)
Unrealized holding gains (losses) on debt securities available for sale, Net of Tax | (74,556) | (30,079)
Unrealized losses on debt securities transferred from held to maturity to available for sale, Tax Effect | 13,812 |
Unrealized losses on debt securities transferred from held to maturity to available for sale, Net of Tax | (34,644) |
Amounts reclassified from AOCI, Tax Effect | 30 | 7
Amounts reclassified from AOCI, Net of Tax | (76) | (18)
Amortization of unrealized losses on securities transferred to held to maturity, Tax Effect | 252 |
Amortization of unrealized losses on securities transferred to held to maturity, Net of Tax | (631) |
Unrealized gains (losses) on cash flow hedges: |  |
Unrealized holding gains (losses) on cash flow hedges, Tax Effect | (1,931) |
Unrealized holding gains (losses) on cash flow hedges, Net of Tax | (4,845) | 410
Amounts reclassified from AOCI, Tax Effect | (143) |
Reclassification adjustment for realized (gains) losses on cash flow hedges included in net income, net of taxes of $143 and ($79), respectively | (357) | 199
Ending balance | 1,218,025 | 1,265,822
AOCI |  |
Changes in accumulated other comprehensive income (loss) by component, net of tax |  |
Beginning balance | (23,758) | 33,309
Unrealized gains (losses) on cash flow hedges: |  |
Accumulated other comprehensive income (loss) ending balance period, Before Tax | (192,467) | 5,344
Accumulated other comprehensive income (loss) ending balance period, Tax Effect | 54,862 | (1,523)
Ending balance | (137,605) | 3,821
Unrealized gains (losses) on debt securities available for sale |  |
Changes in accumulated other comprehensive income (loss) by component, net of tax |  |
Accumulated other comprehensive income (loss) beginning balance period, Before Tax | (32,272) | 49,644
Accumulated other comprehensive income (loss) beginning balance period, Tax Effect | 9,199 | (14,151)
Beginning balance | (23,073) | 35,493
Unrealized gains (losses) on debt securities available for sale: |  |
Unrealized holding gains (losses) on debt securities available for sale, Before Tax | (104,282) | (42,072)
Unrealized holding gains (losses) on debt securities available for sale, Tax Effect | 29,726 | 11,993
Unrealized holding gains (losses) on debt securities available for sale, Net of Tax | (74,556) | (30,079)
Unrealized losses on debt securities transferred from held to maturity to available for sale, Before Tax | (48,456) |
Unrealized losses on debt securities transferred from held to maturity to available for sale, Tax Effect | 13,812 |
Unrealized losses on debt securities transferred from held to maturity to available for sale, Net of Tax | (34,644) |
Amounts reclassified from AOCI, Before Tax | (106) | (25)
Amounts reclassified from AOCI, Tax Effect | 30 | 7
Amounts reclassified from AOCI, Net of Tax | (76) | (18)
Amortization of unrealized losses on securities transferred to held to maturity, Before Tax | 883 |
Amortization of unrealized losses on securities transferred to held to maturity, Tax Effect | (252) |
Amortization of unrealized losses on securities transferred to held to maturity, Net of Tax | 631 |
Unrealized gains (losses) on cash flow hedges: |  |
Accumulated other comprehensive income (loss) ending balance period, Before Tax | (184,233) | 7,547
Accumulated other comprehensive income (loss) ending balance period, Tax Effect | 52,515 | (2,151)
Ending balance | (131,718) | 5,396
Unrealized gains (losses) on cash flow hedges |  |
Changes in accumulated other comprehensive income (loss) by component, net of tax |  |
Accumulated other comprehensive income (loss) beginning balance period, Before Tax | (958) | (3,055)
Accumulated other comprehensive income (loss) beginning balance period, Tax Effect | 273 | 871
Beginning balance | (685) | (2,184)
Unrealized gains (losses) on cash flow hedges: |  |
Unrealized holding gains (losses) on cash flow hedges, Before Tax | (6,776) | 574
Unrealized holding gains (losses) on cash flow hedges, Tax Effect | 1,931 | (164)
Unrealized holding gains (losses) on cash flow hedges, Net of Tax | (4,845) | 410
Amounts reclassified from AOCI, Before Tax | (500) | 278
Amounts reclassified from AOCI, Tax Effect | 143 | (79)
Reclassification adjustment for realized (gains) losses on cash flow hedges included in net income, net of taxes of $143 and ($79), respectively | (357) | 199
Accumulated other comprehensive income (loss) ending balance period, Before Tax | (8,234) | (2,203)
Accumulated other comprehensive income (loss) ending balance period, Tax Effect | 2,347 | 628
Ending balance | $ (5,887) | $ (1,575)

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