LOANS AND LEASES, NET - Impaired Loans (Details) - USD ($) $ in Thousands	12 Months Ended
Sep. 30, 2021	Sep. 30, 2020
Loans without specific valuation allowance [Abstract]
Impaired loans, unpaid balance	$ 41,030
Loans with a specific valuation allowance [Abstract]
Average Recorded Investment	43,324	$ 43,463
Recognized Interest Income		521
National Lending \| Term lending
Loans without specific valuation allowance [Abstract]
Impaired loans, unpaid balance	20,965
Loans with a specific valuation allowance [Abstract]
Average Recorded Investment	20,965	26,126
Recognized Interest Income		386
National Lending \| Asset based lending
Loans with a specific valuation allowance [Abstract]
Average Recorded Investment		1,339
Recognized Interest Income		0
National Lending \| Factoring
Loans without specific valuation allowance [Abstract]
Impaired loans, unpaid balance	1,268
Loans with a specific valuation allowance [Abstract]
Average Recorded Investment	1,268	4,075
Recognized Interest Income		13
National Lending \| Lease financing
Loans without specific valuation allowance [Abstract]
Impaired loans, unpaid balance	3,882
Loans with a specific valuation allowance [Abstract]
Average Recorded Investment	3,882	3,370
Recognized Interest Income		16
National Lending \| SBA/USDA
Loans with a specific valuation allowance [Abstract]
Average Recorded Investment		3,164
Recognized Interest Income		0
National Lending \| Commercial finance
Loans without specific valuation allowance [Abstract]
Impaired loans, unpaid balance	26,115
Loans with a specific valuation allowance [Abstract]
Average Recorded Investment	26,115	38,074
Recognized Interest Income		415
National Lending \| Other consumer finance
Loans with a specific valuation allowance [Abstract]
Average Recorded Investment	2,294	1,860
Recognized Interest Income		143
National Lending \| Consumer finance
Loans with a specific valuation allowance [Abstract]
Average Recorded Investment	2,294	1,860
Recognized Interest Income		143
Community Banking
Loans without specific valuation allowance [Abstract]
Impaired loans, unpaid balance	14,915
Loans with a specific valuation allowance [Abstract]
Average Recorded Investment	$ 14,915	3,529
Recognized Interest Income		$ 37

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- References

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- Definition

Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=123577603&loc=d3e5212-111524

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 17
-URI http://asc.fasb.org/extlink&oid=123577603&loc=d3e5258-111524

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Amount of interest income recognized that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired.

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