LOANS RECEIVABLE AND REVENUE - Delinquent Loans - Aging Analysis (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022	Jun. 30, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable	$ 1,254,401	$ 1,254,395
Less: allowance for credit losses	(199,739)	(81,185)
Loans receivable, net	1,054,662	1,173,210
Consumer Portfolio Segment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable	1,254,401	1,254,395
Less: allowance for credit losses	(199,739)	(81,185)	$ (210,293)
Loans receivable, net	1,054,662	1,173,210
Consumer Portfolio Segment | Delinquent loans receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable	107,092	95,818
Consumer Portfolio Segment | 1-30 days past-due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable	87,166	99,700
Consumer Portfolio Segment | 31-60 days past-due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable	30,844	30,883
Consumer Portfolio Segment | 61-90 days past-due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable	21,019	22,021
Consumer Portfolio Segment | 91 + days past-due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable	55,229	42,914
Consumer Portfolio Segment | Current loans receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable	1,060,143	1,058,877
Consumer Portfolio Segment | Revolving LOC
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable	469,041	451,077
Less: allowance for credit losses	(119,183)	(37,972)	(125,650)
Loans receivable, net	349,858	413,105
Consumer Portfolio Segment | Revolving LOC | Delinquent loans receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable	40,199	18,471
Consumer Portfolio Segment | Revolving LOC | 1-30 days past-due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable	20,025	22,991
Consumer Portfolio Segment | Revolving LOC | 31-60 days past-due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable	10,572	9,403
Consumer Portfolio Segment | Revolving LOC | 61-90 days past-due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable	8,705	7,878
Consumer Portfolio Segment | Revolving LOC | 91 + days past-due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable	20,922	1,190
Consumer Portfolio Segment | Revolving LOC | Current loans receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable	408,817	409,615
Consumer Portfolio Segment | Installment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable	785,360	803,318
Less: allowance for credit losses	(80,556)	(43,213)	$ (84,643)
Loans receivable, net	704,804	760,105
Consumer Portfolio Segment | Installment | Delinquent loans receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable	66,893	77,347
Consumer Portfolio Segment | Installment | 1-30 days past-due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable	67,141	76,709
Consumer Portfolio Segment | Installment | 31-60 days past-due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable	20,272	21,480
Consumer Portfolio Segment | Installment | 61-90 days past-due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable	12,314	14,143
Consumer Portfolio Segment | Installment | 91 + days past-due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable	34,307	41,724
Consumer Portfolio Segment | Installment | Current loans receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable	$ 651,326	$ 649,262