INVESTMENT SECURITIES - Securities with unrealized losses (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Mar. 31, 2020	Dec. 31, 2019
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, Fair Value	$ 38,503	$ 35,983
Less than 12 months, Unrealized Losses	(839)	(238)
More than 12 months, Fair Value	3,889	6,797
More than 12 months, Unrealized Losses	(119)	(171)
Total Fair Value	42,392	42,780
Total Unrealized Losses	(958)	(409)
Sales	0	0
Association (“GNMA”) mortgage-backed securities – residential
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, Fair Value	29,866	28,203
Less than 12 months, Unrealized Losses	(270)	(193)
More than 12 months, Fair Value	3,889	4,450
More than 12 months, Unrealized Losses	(119)	(142)
Total Fair Value	33,755	32,653
Total Unrealized Losses	(389)	(335)
Federal National Mortgage Association (“FNMA”) mortgage-backed securities – residential
Debt Securities, Available-for-sale [Line Items]
More than 12 months, Fair Value		2,347
More than 12 months, Unrealized Losses		(29)
Total Fair Value		2,347
Total Unrealized Losses		(29)
Corporate collateralized mortgage obligations (”CMO”) and mortgage-backed securities (”MBS”)
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, Fair Value	8,637	7,780
Less than 12 months, Unrealized Losses	(569)	(45)
Total Fair Value	8,637	7,780
Total Unrealized Losses	$ (569)	$ (45)

Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for more than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

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