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Securities - Unrealized Gains (Losses) of Debt Securities (Details) - USD ($) $ in Thousands | Jun. 30, 2021 | Dec. 31, 2020
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Investments, Debt and Equity Securities [Abstract] |  |
Total unrealized gains/(losses) on debt securities available-for-sale, Gross Unrealized Gains | $ 25,494 | $ 33,478
Total unrealized gains/(losses) on debt securities available-for-sale, Gross Unrealized Losses | (1,495) | (90)
Total unrealized gains/(losses) on debt securities available-for-sale, Net Unrealized Gains/(Losses) | 23,999 | 33,388
Income tax (expense) benefit, Gross Unrealized Gains | (5,424) | (7,128)
Income tax (expense) benefit, Gross Unrealized Losses | 318 | 19
Income tax (expense) benefit, Net Unrealized Gains/(Losses) | (5,107) | (7,109)
Net Unrealized Gains/(Losses), Net of Tax Included in Accumulated Other Comprehensive Income/(Loss), Gross Unrealized Gains | 20,070 | 26,350
Net Unrealized Gains/(Losses), Net of Tax Included in Accumulated Other Comprehensive Income/(Loss), Gross Unrealized Losses | (1,177) | (71)
Net Unrealized Gains/(Losses), Net of Tax Included in Accumulated Other Comprehensive Income/(Loss), Net Unrealized Gains/(Losses) | $ 18,892 | $ 26,279

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- Definition Amount, after tax, of accumulated unrealized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14 -URI http://asc.fasb.org/extlink&oid=124509347&loc=d3e681-108580 + Details
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