PREMISES AND EQUIPMENT AND DEVELOPED SOFTWARE - Premises and Equipment (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Property, Plant and Equipment [Line Items]
Accumulated depreciation	$ (552,000)		$ (552,000)		$ (395,000)
Total	448,000		448,000		535,000
Depreciation of premises and equipment	100,000	$ 100,000	157,000	$ 128,000
Impairment	0	$ 0	0	$ 0
IT equipment
Property, Plant and Equipment [Line Items]
IT equipment	$ 1,000,000		$ 1,000,000		$ 930,000
IT equipment | Minimum
Property, Plant and Equipment [Line Items]
Expected useful life (in years)	3 years		3 years
IT equipment | Maximum
Property, Plant and Equipment [Line Items]
Expected useful life (in years)	5 years		5 years