LOANS RECEIVABLE AND REVENUE - Delinquent Loans - Aging Analysis (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans receivable	$ 769,228	$ 553,722
Delinquent loans receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans receivable	70,544	70,244
Consumer Portfolio Segment | Delinquent loans receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans receivable	70,544	70,244
Consumer Portfolio Segment | 0-30 days past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans receivable	33,597	31,642
Consumer Portfolio Segment | 31-60 days past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans receivable	15,733	18,599
Consumer Portfolio Segment | 61 + days past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans receivable	21,214	20,003
Consumer Portfolio Segment | Revolving LOC
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans receivable	606,430	358,884
Consumer Portfolio Segment | Revolving LOC | Delinquent loans receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans receivable	43,933	37,779
Consumer Portfolio Segment | Revolving LOC | 0-30 days past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans receivable	22,288	17,517
Consumer Portfolio Segment | Revolving LOC | 31-60 days past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans receivable	8,659	9,276
Consumer Portfolio Segment | Revolving LOC | 61 + days past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans receivable	12,986	10,986
Consumer Portfolio Segment | Total Installment - Company Owned
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans receivable	162,798	194,838
Consumer Portfolio Segment | Total Installment - Company Owned | Delinquent loans receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans receivable	26,611	32,465
Consumer Portfolio Segment | Total Installment - Company Owned | 0-30 days past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans receivable	11,309	14,125
Consumer Portfolio Segment | Total Installment - Company Owned | 31-60 days past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans receivable	7,074	9,323
Consumer Portfolio Segment | Total Installment - Company Owned | 61 + days past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans receivable	8,228	9,017
Consumer Portfolio Segment | Unsecured Installment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans receivable	86,638	102,425
Consumer Portfolio Segment | Unsecured Installment | Delinquent loans receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans receivable	21,035	24,190
Consumer Portfolio Segment | Unsecured Installment | 0-30 days past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans receivable	8,474	10,361
Consumer Portfolio Segment | Unsecured Installment | 31-60 days past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans receivable	5,767	7,124
Consumer Portfolio Segment | Unsecured Installment | 61 + days past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans receivable	6,794	6,705
Consumer Portfolio Segment | Secured Installment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans receivable	37,400	48,633
Consumer Portfolio Segment | Secured Installment | Delinquent loans receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans receivable	5,576	8,275
Consumer Portfolio Segment | Secured Installment | 0-30 days past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans receivable	2,835	3,764
Consumer Portfolio Segment | Secured Installment | 31-60 days past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans receivable	1,307	2,199
Consumer Portfolio Segment | Secured Installment | 61 + days past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans receivable	$ 1,434	$ 2,312