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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) (Parenthetical) - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2021 | Mar. 31, 2020
Income Statement [Abstract] |  |
Unrealized (loss) gain during the period on available-for-sale securities, taxes | $ (1,637) | $ 899

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