INVESTMENT SECURITIES - Schedule of Gain on Securities (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Investments, Debt and Equity Securities [Abstract]
Unrealized holding gains (losses) on equity securities	$ (2)	$ 0	$ (13)	$ 5
Net realized gains on sales of other investments	532	0	532	0
Total gain on securities	$ 530	$ 0	$ 519	$ 5

Amount of unrealized and realized gain (loss) on investment in debt and equity securities.

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Amount of unrealized gain (loss) on investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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Amount of gain (loss) included in earnings for investments classified as other.

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