LOANS RECEIVABLE AND REVENUE - Delinquent and Non-Accrual Loans (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Financing Receivable, Past Due [Line Items]
Total loans receivable	$ 1,254,401		$ 1,254,401		$ 1,254,395
Gross interest income	167,863	$ 186,409	504,247	$ 737,547
Interest and fees revenue
Financing Receivable, Past Due [Line Items]
Gross interest income	143,493	$ 155,940	429,563	$ 659,725
Consumer Portfolio Segment
Financing Receivable, Past Due [Line Items]
Total loans receivable	1,254,401		1,254,401		1,254,395
Consumer Portfolio Segment | 31-60 days past-due
Financing Receivable, Past Due [Line Items]
Total loans receivable	$ 30,844		$ 30,844		30,883
Percentage of total loan receivables, past due	2.50%		2.50%
Consumer Portfolio Segment | 61-90 days past-due
Financing Receivable, Past Due [Line Items]
Total loans receivable	$ 21,019		$ 21,019		22,021
Percentage of total loan receivables, past due	1.70%		1.70%
Consumer Portfolio Segment | 91 + days past-due
Financing Receivable, Past Due [Line Items]
Total loans receivable	$ 55,229		$ 55,229		42,914
Percentage of total loan receivables, past due	4.40%		4.40%
Consumer Portfolio Segment | Total delinquent
Financing Receivable, Past Due [Line Items]
Total loans receivable	$ 107,092		$ 107,092		95,818
91 or more days delinquent and accruing	5,804		5,804
Total non-accruing	$ 53,767		$ 53,767
Percentage of total loan receivables, past due	8.50%		8.50%
Percentage of total loan receivable, 90 days of more delinquent and accruing	0.50%		0.50%
Percentage of total loan receivables, non accruing	4.30%		4.30%
Consumer Portfolio Segment | Total delinquent | Interest and fees revenue
Financing Receivable, Past Due [Line Items]
Gross interest income	$ 1,000		$ 4,700
Consumer Portfolio Segment | Revolving LOC
Financing Receivable, Past Due [Line Items]
Total loans receivable	469,041		469,041		451,077
Total non-accruing					4,500
Consumer Portfolio Segment | Revolving LOC | 31-60 days past-due
Financing Receivable, Past Due [Line Items]
Total loans receivable	10,572		10,572		9,403
Consumer Portfolio Segment | Revolving LOC | 61-90 days past-due
Financing Receivable, Past Due [Line Items]
Total loans receivable	8,705		8,705		7,878
Consumer Portfolio Segment | Revolving LOC | 91 + days past-due
Financing Receivable, Past Due [Line Items]
Total loans receivable	20,922		20,922		1,190
Consumer Portfolio Segment | Revolving LOC | Total delinquent
Financing Receivable, Past Due [Line Items]
Total loans receivable	40,199		40,199		18,471
91 or more days delinquent and accruing	4,398		4,398
Total non-accruing	18,001		18,001
Consumer Portfolio Segment | Installment
Financing Receivable, Past Due [Line Items]
Total loans receivable	785,360		785,360		803,318
Total non-accruing					54,600
Consumer Portfolio Segment | Installment | 31-60 days past-due
Financing Receivable, Past Due [Line Items]
Total loans receivable	20,272		20,272		21,480
Consumer Portfolio Segment | Installment | 61-90 days past-due
Financing Receivable, Past Due [Line Items]
Total loans receivable	12,314		12,314		14,143
Consumer Portfolio Segment | Installment | 91 + days past-due
Financing Receivable, Past Due [Line Items]
Total loans receivable	34,307		34,307		41,724
Consumer Portfolio Segment | Installment | Total delinquent
Financing Receivable, Past Due [Line Items]
Total loans receivable	66,893		66,893		$ 77,347
91 or more days delinquent and accruing	1,406		1,406
Total non-accruing	$ 35,766		$ 35,766