CREDIT SERVICES ORGANIZATION (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016
Loans and Leases Receivable Disclosure [Line Items]
Credit services organization, fees receivable	$ 11,400		$ 14,500
Guarantor obligations, maximum exposure, undiscounted	58,700		65,200
Credit services organization guarantee liability	11,619	$ 10,412	17,795	$ 15,582	$ 19,783	$ 17,052
Amounts placed in collateral accounts	$ 15,200		$ 17,900
Minimum
Loans and Leases Receivable Disclosure [Line Items]
CSO program loan terms	3 months
Maximum
Loans and Leases Receivable Disclosure [Line Items]
CSO program loan terms	18 months