GOODWILL AND INTANGIBLE ASSETS (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Sep. 30, 2017	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2017	Dec. 14, 2016	Nov. 01, 2016	Sep. 30, 2016	Sep. 08, 2015	Dec. 02, 2014
Finite-Lived Intangible Assets [Line Items]
Goodwill	$ 98,723	$ 36,928	$ 36,928	$ 36,928	$ 98,723			$ 36,928
Goodwill [Roll Forward]
Balance, beginning of period		36,928	36,928
Acquisitions during the period		61,795	0
Amortization during the period		(12,363)	(4,828)
Write-offs during the period		0	0
Balance, end of period	98,723	98,723	36,928	36,928
Intangible Assets [Roll Forward]
Balance, beginning of period		28,921	33,577
Acquisitions during the period		46,397	172
Amortization during the period		(12,363)	(4,828)
Write-offs during the period		(10,777)	0
Balance, end of period	52,178	52,178	28,921	33,577
Amortization of Intangible Assets Roll Forward [Roll Forward]
Amount Upon Acquisition		35,369
Accumulated amortization					(18,827)			(6,448)
Accumulated impairment					(10,777)
Balance at the end of the period	81,782	81,782	35,369
Intangible impairment	10,200	10,248	0	0
Anticipated intangible amortization [Abstract]
2018					7,706
2019					7,147
2020					5,749
2021					5,179
2022					4,257
Thereafter					22,140
Total anticipated intangible amortization	52,178	$ 28,921	33,577	33,577	52,178			28,921
AFS/IBEX Financial Services Inc [Member]
Finite-Lived Intangible Assets [Line Items]
Goodwill										$ 11,600
EPS Financial, LLC [Member]
Finite-Lived Intangible Assets [Line Items]
Goodwill							$ 30,375
Amortization of Intangible Assets Roll Forward [Roll Forward]
Book Amortization Period		16 years 1 month 6 days
Refund Advantage [Member]
Finite-Lived Intangible Assets [Line Items]
Goodwill									$ 25,400
Specialty Consumer Services [Member]
Finite-Lived Intangible Assets [Line Items]
Goodwill						$ 31,419
Amortization of Intangible Assets Roll Forward [Roll Forward]
Book Amortization Period		10 years 2 months 12 days
Trademark [Member]
Goodwill [Roll Forward]
Amortization during the period		$ (598)	(290)
Intangible Assets [Roll Forward]
Balance, beginning of period		5,149	5,439
Acquisitions during the period		5,500	0
Amortization during the period		(598)	(290)
Write-offs during the period		0	0
Balance, end of period	10,051	10,051	5,149	5,439
Amortization of Intangible Assets Roll Forward [Roll Forward]
Amount Upon Acquisition		5,490
Accumulated amortization					(939)			(341)
Accumulated impairment					0
Balance at the end of the period	10,990	10,990	5,490
Anticipated intangible amortization [Abstract]
Total anticipated intangible amortization	10,051	$ 5,149	5,439	5,439	10,051			5,149
Trademark [Member] | EPS Financial, LLC [Member]
Amortization of Intangible Assets Roll Forward [Roll Forward]
Book Amortization Period		15 years
Trademark [Member] | Specialty Consumer Services [Member]
Amortization of Intangible Assets Roll Forward [Roll Forward]
Book Amortization Period		5 years
Non-Compete [Member]
Goodwill [Roll Forward]
Amortization during the period		$ (525)	(100)
Intangible Assets [Roll Forward]
Balance, beginning of period		127	227
Acquisitions during the period		2,180	0
Amortization during the period		(525)	(100)
Write-offs during the period		0	0
Balance, end of period	1,782	1,782	127	227
Amortization of Intangible Assets Roll Forward [Roll Forward]
Amount Upon Acquisition		300
Accumulated amortization					(698)			(173)
Accumulated impairment					0
Balance at the end of the period	2,480	2,480	300
Anticipated intangible amortization [Abstract]
Total anticipated intangible amortization	1,782	$ 127	227	227	1,782			127
Non-Compete [Member] | EPS Financial, LLC [Member]
Amortization of Intangible Assets Roll Forward [Roll Forward]
Book Amortization Period		3 years
Non-Compete [Member] | Specialty Consumer Services [Member]
Amortization of Intangible Assets Roll Forward [Roll Forward]
Book Amortization Period		4 years 1 month 6 days
Customer Relationships [Member]
Goodwill [Roll Forward]
Amortization during the period		$ (10,405)	(4,221)
Intangible Assets [Roll Forward]
Balance, beginning of period		20,590	24,811
Acquisitions during the period		31,770	0
Amortization during the period		(10,405)	(4,221)
Write-offs during the period		(10,248)	0
Balance, end of period	31,707	31,707	20,590	24,811
Amortization of Intangible Assets Roll Forward [Roll Forward]
Amount Upon Acquisition		26,040
Accumulated amortization					(15,855)			(5,450)
Accumulated impairment					(10,248)
Balance at the end of the period	57,810	57,810	26,040
Anticipated intangible amortization [Abstract]
Total anticipated intangible amortization	31,707	$ 20,590	24,811	24,811	31,707			20,590
Customer Relationships [Member] | EPS Financial, LLC [Member]
Amortization of Intangible Assets Roll Forward [Roll Forward]
Book Amortization Period		20 years
Customer Relationships [Member] | Refund Advantage [Member] | Minimum [Member]
Amortization of Intangible Assets Roll Forward [Roll Forward]
Book Amortization Period		12 years
Customer Relationships [Member] | Refund Advantage [Member] | Maximum [Member]
Amortization of Intangible Assets Roll Forward [Roll Forward]
Book Amortization Period		20 years
Customer Relationships [Member] | Specialty Consumer Services [Member]
Amortization of Intangible Assets Roll Forward [Roll Forward]
Book Amortization Period		9 years 1 month 6 days
Other [Member]
Goodwill [Roll Forward]
Amortization during the period		$ (835)	(217)
Intangible Assets [Roll Forward]
Balance, beginning of period		3,055	3,100
Acquisitions during the period		6,947	172
Amortization during the period		(835)	(217)
Write-offs during the period		(529)	0
Balance, end of period	8,638	8,638	3,055	3,100
Amortization of Intangible Assets Roll Forward [Roll Forward]
Amount Upon Acquisition		3,539
Accumulated amortization					(1,335)			(484)
Accumulated impairment					(529)
Balance at the end of the period	10,502	10,502	3,539
Anticipated intangible amortization [Abstract]
Total anticipated intangible amortization	$ 8,638	$ 3,055	$ 3,100	$ 3,100	$ 8,638			$ 3,055
Other [Member] | EPS Financial, LLC [Member]
Amortization of Intangible Assets Roll Forward [Roll Forward]
Book Amortization Period		3 years
Other [Member] | Specialty Consumer Services [Member]
Amortization of Intangible Assets Roll Forward [Roll Forward]
Book Amortization Period		15 years