SHAREHOLDERS' EQUITY - Restricted stock awards (Details) - USD ($)	3 Months Ended		9 Months Ended	12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2022	Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Recognized compensation expense	$ 100,000
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares issued				105,264
Value of awards				$ 3,000,000
Unrecognized compensation expense	$ 0
Recognized compensation expense		$ 100,000	$ 200,000
Awards vested (in shares)			10,527
Employee service period
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares issued				52,632
Value of awards				$ 1,500,000
Vesting period (in years)				5 years
Performance of mortgage division
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares issued				52,632
Value of awards				$ 1,500,000