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INVESTMENT SECURITIES - Maturity (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2021	Dec. 31, 2020
Held-to-maturity securities, Amortized cost
Due from five to ten years	$ 11,483	$ 11,490
After ten years	4,028	6,033
Total	15,511	17,523
Held-to-maturity securities, Fair value
Due from five to ten years	11,261	11,452
After ten years	4,059	6,053
Total	15,320	17,505
Available-for-sale securities, Amortized cost
Due from one to five years		1
Due from five to ten years	3,445	3,361
After ten years	38,545	17,234
Total	41,990	20,596
Available-for-sale securities, Fair value
Due from one to five years		1
Due from five to ten years	3,418	3,355
After ten years	38,438	17,374
Total	41,856	20,730
Securities transferred between classifications	$ 0	$ 0

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