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v3.20.4

Changes in Accumulated Other Comprehensive Income by Component - Summary (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Accumulated other comprehensive income |  |  |
Beginning balance | $ 460,305 | $ 440,780 | $ 399,952
Other comprehensive income (loss) before reclassifications | 2,557 | 2,848 | (844)
Losses (gains) reclassified from other comprehensive income | 87 | (87) | 165
Net current period other comprehensive income (loss) | 2,644 | 2,761 | (679)
Ending balance | 480,461 | 460,305 | 440,780
Realized loss | (100) |  | (200)
Realized gain |  | 100 |
Changes in other comprehensive (loss) income, tax expense (benefit) | (700) |  | (100)
Accumulated Other Comprehensive Income, net of taxes |  |  |
Accumulated other comprehensive income |  |  |
Beginning balance | 2,919 | 158 | 837
Ending balance | $ 5,563 | $ 2,919 | $ 158

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- Definition Amount of realized gain 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/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121645371&loc=d3e27357-111563 + Details
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