Leases, Number of Operating Leases

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

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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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Amount of accumulated impairment loss for 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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Amount of increase (decrease) 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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The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of an intangible asset (excluding goodwill) to fair value.

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GOODWILL AND INTANGIBLE ASSETS - Narrative (Details)	12 Months Ended
GOODWILL AND INTANGIBLE ASSETS - Narrative (Details)	Sep. 30, 2020 USD ($) Lease	Sep. 30, 2019 USD ($)	Sep. 30, 2018 USD ($)	Jun. 30, 2020 USD ($)
Finite-Lived Intangible Assets [Line Items]
Goodwill	$ 309,505,000	$ 309,505,000	$ 303,270,000
Goodwill impairment	0			$ 0
Impairments to intangible assets	$ 0	$ 111,000	$ 18,000
DC Solar
Finite-Lived Intangible Assets [Line Items]
Number of operating leases \| Lease	3
Net increase to liabilities and goodwill recognized	$ 3,800,000
Crestmark Bancorp, Inc.
Finite-Lived Intangible Assets [Line Items]
Number of operating leases \| Lease	2