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Accumulated Other Comprehensive Income, Net - Components of Accumulated Other Comprehensive Income (Loss) (Parenthetical) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019
Change in net unrealized holding gains on securities available-for-sale, tax expense | $ 103 | $ 370
Change in net unrealized holding losses on interest rate swaps, tax benefit | 163 | 51
Transfer of securities held-to-maturity to available-for-sale, tax expense | 113 |
Gains realized in income, tax expense | (44) | (95)
Net Unrealized Gains (Losses) on Available-For-Sale Securities [Member] |  |
Change in net unrealized holding gains on securities available-for-sale, tax expense | 103 | 370
Net Unrealized Gains (Losses) on Interest Rate Swaps [Member |  |
Change in net unrealized holding losses on interest rate swaps, tax benefit | 163 | 51
Transfer of Held-To-Maturity Securities to Available-For-Sale [Member] |  |
Transfer of securities held-to-maturity to available-for-sale, tax expense | 113 |
Gains Realized in Net Income [Member] |  |
Gains realized in income, tax expense | $ 44 | $ 95

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- Definition Amount, before adjustment, of tax expense (benefit) for unrealized holding gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Excludes tax expense (benefit) for unrealized gain (loss) on investment in debt security measured at amortized cost (held-to-maturity) from transfer to available-for-sale. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=121641772&loc=d3e640-108580 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=121641772&loc=SL7669646-108580 + Details
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