LOANS RECEIVABLE AND REVENUE - Loan Modifications (Details) - Consumer Portfolio Segment $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2023 USD ($) Rate	Sep. 30, 2023 USD ($)	Sep. 30, 2023 USD ($) Rate	Sep. 30, 2023 USD ($)
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amount	$ 1,885	$ 3,238
Percentage of total loan receivables	0.20%		0.30%	0.50%
Total delinquent modified loans	$ 5,969	5,969	$ 5,969	$ 5,969
Current
Financing Receivable, Troubled Debt Restructuring [Line Items]
Percentage of total loan receivables				1.00%
Total delinquent modified loans	12,576	12,576	12,576	$ 12,576
1-30 days past-due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Percentage of total loan receivables				0.10%
Total delinquent modified loans	1,671	1,671	1,671	$ 1,671
31-60 days past-due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Percentage of total loan receivables				0.10%
Total delinquent modified loans	1,232	1,232	1,232	$ 1,232
61-90 days past-due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Percentage of total loan receivables				0.10%
Total delinquent modified loans	1,018	1,018	1,018	$ 1,018
91 + days past-due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Percentage of total loan receivables				0.30%
Total delinquent modified loans	3,719	3,719	3,719	$ 3,719
Revolving LOC
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total delinquent modified loans	5,913	5,913	$ 5,913	5,913
Revolving LOC | Principal / accrued interest forgiven
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amount	$ 1,844	3,151
Percentage of total loan receivables | Rate	0.10%		0.30%
Revolving LOC | Current
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total delinquent modified loans	$ 12,550	12,550	$ 12,550	12,550
Revolving LOC | 1-30 days past-due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total delinquent modified loans	1,667	1,667	1,667	1,667
Revolving LOC | 31-60 days past-due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total delinquent modified loans	1,222	1,222	1,222	1,222
Revolving LOC | 61-90 days past-due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total delinquent modified loans	1,006	1,006	1,006	1,006
Revolving LOC | 91 + days past-due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total delinquent modified loans	3,685	3,685	3,685	3,685
Installment
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total delinquent modified loans	56	56	56	56
Installment | Principal / accrued interest forgiven
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amount	41	87
Installment | Current
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total delinquent modified loans	26	26	26	26
Installment | 1-30 days past-due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total delinquent modified loans	4	4	4	4
Installment | 31-60 days past-due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total delinquent modified loans	10	10	10	10
Installment | 61-90 days past-due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total delinquent modified loans	12	12	12	12
Installment | 91 + days past-due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total delinquent modified loans	$ 34	$ 34	$ 34	$ 34