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Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized in the remainder of the fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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GOODWILL AND INTANGIBLE ASSETS (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 14, 2016	Nov. 01, 2016	Sep. 08, 2015	Dec. 02, 2014
Finite-Lived Intangible Assets [Line Items]
Goodwill	$ 98,723	$ 98,723	$ 98,723	$ 36,928	$ 98,723	$ 98,723
Goodwill [Roll Forward]
Balance, beginning of period			98,723	36,928
Acquisitions during the period			0	61,795
Write-offs during the period			0	0
Balance, end of period	98,723	98,723	98,723	98,723
Intangible Assets [Roll Forward]
Balance, beginning of period			52,178	28,921
Acquisitions during the period			85	46,372
Amortization during the period			(6,077)	(10,495)
Write-offs during the period			(88)	0
Balance, end of period	46,098	64,798	46,098	64,798
Amortizable intangible assets [Abstract]
Gross carrying amount					81,867	81,758
Accumulated amortization					(24,904)	(16,960)
Accumulated impairment					(10,865)
Total anticipated intangible amortization	46,098	64,798	52,178	28,921	46,098	64,798
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Remaining in 2018					1,632
2019					7,151
2020					5,753
2021					5,184
2022					4,262
2023					3,624
Thereafter					18,492
Total anticipated intangible amortization	46,098	64,798	52,178	28,921	46,098	64,798
Impairment of intangible assets	0	0	0	0
AFS/IBEX Financial Services Inc [Member]
Finite-Lived Intangible Assets [Line Items]
Goodwill										$ 11,600
Refund Advantage Financial Services Inc [Member]
Finite-Lived Intangible Assets [Line Items]
Goodwill							$ 31,400	$ 30,400	$ 25,400
Trademark [Member]
Intangible Assets [Roll Forward]
Balance, beginning of period			10,051	5,149
Acquisitions during the period			0	5,500
Amortization during the period			(477)	(442)
Write-offs during the period			0	0
Balance, end of period	9,574	10,207	9,574	10,207
Amortizable intangible assets [Abstract]
Gross carrying amount					10,990	10,990
Accumulated amortization					(1,416)	(783)
Accumulated impairment					0
Total anticipated intangible amortization	9,574	10,207	10,051	5,149	9,574	10,207
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Total anticipated intangible amortization	$ 9,574	10,207	10,051	5,149	9,574	10,207
Trademark [Member] \| Refund Advantage Financial Services Inc [Member] \| Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Useful life	5 years
Trademark [Member] \| Refund Advantage Financial Services Inc [Member] \| Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Useful life	15 years
Non-Compete [Member]
Intangible Assets [Roll Forward]
Balance, beginning of period			1,782	127
Acquisitions during the period			0	2,180
Amortization during the period			(367)	(371)
Write-offs during the period			0	0
Balance, end of period	$ 1,415	1,936	1,415	1,936
Amortizable intangible assets [Abstract]
Gross carrying amount					2,480	2,480
Accumulated amortization					(1,065)	(544)
Accumulated impairment					0
Total anticipated intangible amortization	1,415	1,936	1,782	127	1,415	1,936
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Total anticipated intangible amortization	$ 1,415	1,936	1,782	127	1,415	1,936
Non-Compete [Member] \| Refund Advantage Financial Services Inc [Member] \| Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Useful life	3 years
Non-Compete [Member] \| Refund Advantage Financial Services Inc [Member] \| Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Useful life	5 years
Customer Relationships [Member]
Intangible Assets [Roll Forward]
Balance, beginning of period			31,707	20,590
Acquisitions during the period			0	31,770
Amortization during the period			(4,548)	(9,084)
Write-offs during the period			0	0
Balance, end of period	$ 27,159	43,276	27,159	43,276
Amortizable intangible assets [Abstract]
Gross carrying amount					57,810	57,810
Accumulated amortization					(20,403)	(14,534)
Accumulated impairment					(10,248)
Total anticipated intangible amortization	27,159	43,276	31,707	20,590	27,159	43,276
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Total anticipated intangible amortization	$ 27,159	43,276	31,707	20,590	27,159	43,276
Customer Relationships [Member] \| Refund Advantage Financial Services Inc [Member] \| Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Useful life	10 years
Customer Relationships [Member] \| Refund Advantage Financial Services Inc [Member] \| Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Useful life	30 years
All Others [Member]
Intangible Assets [Roll Forward]
Balance, beginning of period			8,638	3,055
Acquisitions during the period			85	6,922
Amortization during the period			(685)	(598)
Write-offs during the period			(88)	0
Balance, end of period	$ 7,950	9,379	7,950	9,379
Amortizable intangible assets [Abstract]
Gross carrying amount					10,587	10,478
Accumulated amortization					(2,020)	(1,099)
Accumulated impairment					(617)
Total anticipated intangible amortization	7,950	9,379	8,638	3,055	7,950	9,379
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Total anticipated intangible amortization	$ 7,950	$ 9,379	$ 8,638	$ 3,055	$ 7,950	$ 9,379
All Others [Member] \| Refund Advantage Financial Services Inc [Member] \| Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Useful life	3 years
All Others [Member] \| Refund Advantage Financial Services Inc [Member] \| Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Useful life	20 years