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Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Changes in accumulated other comprehensive income (loss) by component, net of tax |  |  |
Beginning balance | $ 1,220,434 | $ 994,964 | $ 935,003
Unrealized gains (losses) on debt securities available for sale: |  |  |
Unrealized holding gains (losses) on debt securities available for sale, Tax Effect | (8,615) | (7,525) | 1,861
Unrealized holding gains (losses) on debt securities available for sale, Net of Tax | 21,561 | 18,905 | (4,670)
Unrealized gains on debt securities transferred from held to maturity to available for sale, Tax Effect |  | 1,433 |
Unrealized gains on debt securities transferred from held to maturity to available for sale, Net of Tax |  | 3,590 |
Amounts reclassified from accumulated other comprehensive income, Tax Effect | 496 | 210 | (507)
Amounts reclassified from accumulated other comprehensive income, Net of Tax | (1,228) | (523) | 1,273
Unrealized gains (losses) on cash flow hedges: |  |  |
Unrealized holding gains (losses) on cash flow hedges, Tax Effect | (1,007) | (81) |
Unrealized holding gains (losses) on cash flow hedges, Net of Tax | (2,526) | (202) |
Amounts reclassified from accumulated other comprehensive income, Tax Effect | 216 | 1 |
Amounts reclassified from accumulated other comprehensive income, Net of Tax | 542 | 2 |
Ending balance | 1,270,069 | 1,220,434 | 994,964
Accumulated Other Comprehensive Income (Loss) |  |  |
Changes in accumulated other comprehensive income (loss) by component, net of tax |  |  |
Accumulated other comprehensive income (loss) beginning balance period, Before Tax | 20,912 | (9,528) |
Accumulated other comprehensive income (loss) beginning balance period, Tax Effect | (5,952) | 2,716 |
Beginning balance | 14,960 | (6,812) | (2,810)
Unrealized gains (losses) on debt securities available for sale: |  |  |
Tax Cuts and Jobs Act of 2017 reclassification |  |  | (605)
Unrealized gains (losses) on cash flow hedges: |  |  |
Accumulated other comprehensive income (loss) ending balance period, Before Tax | 46,589 | 20,912 | (9,528)
Accumulated other comprehensive income (loss) ending balance period, Tax Effect | (13,280) | (5,952) | 2,716
Ending balance | 33,309 | 14,960 | (6,812)
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 | 21,192 | (9,528) | (4,777)
Accumulated other comprehensive income (loss) beginning balance period, Tax Effect | (6,032) | 2,716 | 1,967
Beginning balance | 15,160 | (6,812) | (2,810)
Unrealized gains (losses) on debt securities available for sale: |  |  |
Unrealized holding gains (losses) on debt securities available for sale, Before Tax | 30,176 | 26,430 | (6,531)
Unrealized holding gains (losses) on debt securities available for sale, Tax Effect | (8,615) | (7,525) | 1,861
Unrealized holding gains (losses) on debt securities available for sale, Net of Tax | 21,561 | 18,905 | (4,670)
Unrealized gains on debt securities transferred from held to maturity to available for sale, Before Tax |  | 5,023 |
Unrealized gains on debt securities transferred from held to maturity to available for sale, Tax Effect |  | (1,433) |
Unrealized gains on debt securities transferred from held to maturity to available for sale, Net of Tax |  | 3,590 |
Amounts reclassified from accumulated other comprehensive income, Before Tax | (1,724) | (733) | 1,780
Amounts reclassified from accumulated other comprehensive income, Tax Effect | 496 | 210 | (507)
Amounts reclassified from accumulated other comprehensive income, Net of Tax | (1,228) | (523) | 1,273
Tax Cuts and Jobs Act of 2017 reclassification |  |  | (605)
Unrealized gains (losses) on cash flow hedges: |  |  |
Accumulated other comprehensive income (loss) ending balance period, Before Tax | 49,644 | 21,192 | (9,528)
Accumulated other comprehensive income (loss) ending balance period, Tax Effect | (14,151) | (6,032) | 2,716
Ending balance | 35,493 | 15,160 | $ (6,812)
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 | (280) |  |
Accumulated other comprehensive income (loss) beginning balance period, Tax Effect | 80 |  |
Beginning balance | (200) |  |
Unrealized gains (losses) on cash flow hedges: |  |  |
Unrealized holding gains (losses) on cash flow hedges, Before Tax | (3,533) | (283) |
Unrealized holding gains (losses) on cash flow hedges, Tax Effect | 1,007 | 81 |
Unrealized holding gains (losses) on cash flow hedges, Net of Tax | (2,526) | (202) |
Amounts reclassified from accumulated other comprehensive income, Before Tax | 758 | 3 |
Amounts reclassified from accumulated other comprehensive income, Tax Effect | (216) | (1) |
Amounts reclassified from accumulated other comprehensive income, Net of Tax | 542 | 2 |
Accumulated other comprehensive income (loss) ending balance period, Before Tax | (3,055) | (280) |
Accumulated other comprehensive income (loss) ending balance period, Tax Effect | 871 | 80 |
Ending balance | $ (2,184) | $ (200) |

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