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Summary of Significant Accounting Policies (Tables)

12 Months Ended

Sep. 30, 2024

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, 2022			$	303,457					$	5,552					$	309,009
Additions			1,293						1,297						2,590
Amortization			—						(980)						(980)
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

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)
2025						$	9,862
2026						7,317
2027						5,567
2028						5,205
2029						5,112

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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
-Topic 350
-SubTopic 30
-Name Accounting Standards Codification
-Section 55
-Paragraph 40
-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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