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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)

12 Months Ended

Sep. 30, 2025

Accounting Policies [Abstract]

Schedule of Intangible Assets and Goodwill

The table below provides detail regarding the Company's intangible assets.

	Goodwill		Core Deposit and Other Intangibles		Total
	(In thousands)
Balance at September 30, 2023	$304,750		$5,869		$310,619
Additions	106,610		38,939		145,549
Amortization	—		(7,743)		(7,743)
Balance at September 30, 2024	411,360		37,065		448,425
Additions	3,362		180		3,542
Amortization	—		(9,874)		(9,874)
Balance at September 30, 2025	$414,722		$27,371		$442,093

Schedule of Future Amortization Expense

The table below presents the estimated future amortization expense of other intangibles for the next five years.

Fiscal Year		Expense
		(In thousands)
2026		$7,332
2027		5,582
2028		5,220
2029		5,127
2030		2,343

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- Definition

Tabular disclosure of goodwill and intangible assets, which may be broken down by segment or major class.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 30
-Name Accounting Standards Codification
-Publisher FASB
-URI https://asc.fasb.org/350-30/tableOfContent

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Publisher FASB
-URI https://asc.fasb.org/350-20/tableOfContent

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Tabular disclosure of the amount of amortization expense expected to be recorded in succeeding fiscal years for finite-lived intangible assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Name Accounting Standards Codification
-Section 55
-Paragraph 40
-SubTopic 30
-Topic 350
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482640/350-30-55-40

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)(3)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482665/350-30-50-2

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