INVESTMENT SECURITIES - Held-to-maturity Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	$ 7,990	$ 10,170
Gross Unrecognized Gains	403	205
Gross Unrecognized Losses	0	(26)
Estimated Fair Value	8,393	10,349
Residential MBS
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	7,912	10,087
Gross Unrecognized Gains	403	205
Gross Unrecognized Losses	0	(26)
Estimated Fair Value	8,315	10,266
Fair Value
Less than 12 Months		0
12 Months or More		2,253
Total		2,253
Unrecognized Losses
Less than 12 Months		0
12 Months or More		(26)
Total		(26)
Other investments
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	78	83
Gross Unrecognized Gains	0	0
Gross Unrecognized Losses	0	0
Estimated Fair Value	$ 78	$ 83

Amount of investment in debt security measured at amortized cost (held-to-maturity).

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