EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2021	Sep. 30, 2020
Earnings Per Share [Abstract]
Net income applicable to common shares	$ (14,970)	$ (1,003)	$ (745)	$ (1,665)	$ (16,744)	$ (11,334)	$ (16,718)	$ (29,744)
Earnings Per Share, Basic and Diluted [Abstract]
Average number of common shares outstanding	23,872,092
Less: Average unallocated ESOP shares	1,892,231
Average number of common shares outstanding used to calculate basic	21,979,861
Average number of common shares outstanding used to calculate basic earnings per common share, diluted	21,979,861
Common stock equivalents	0
Earnings per common share, basic	$ (0.68)
Earnings per common share, diluted	$ (0.68)