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INVESTMENT SECURITIES (Tables)

12 Months Ended

Sep. 30, 2025

Investments, Debt and Equity Securities [Abstract]

Schedule of Investments by Contractual Maturity Date

The tables below provide detail regarding the amortized cost and fair value of available-for-sale and held-to-maturity

investment securities.

September 30, 2025	Amortized Cost		Gross Unrealized				Fair Value		Yield
			Gains		Losses
	($ in thousands)
Available-for-sale securities
U.S. government and agency securities due
Within 1 year	$1,687		$—		$(29)		$1,658		2.05%
1 to 5 years	545		—		—		545		5.00
5 to 10 years	158,026		162		(295)		157,893		4.95
Over 10 years	75,887		163		(227)		75,823		5.52
Asset-backed securities due
Within 1 year	10,492		—		(163)		10,329		5.12
5 to 10 years	3,945		7		—		3,952		5.27
Over 10 years	491,734		1,702		(1,383)		492,053		5.36
Corporate debt securities due
1 to 5 years	32,821		—		(2,047)		30,774		4.95
5 to 10 years	128,015		314		(6,566)		121,763		4.37
Municipal bonds due
5 to 10 years	25,659		250		(179)		25,730		5.71
Over 10 years	9,754		—		(226)		9,528		4.57
Mortgage-backed securities
Agency pass-through certificates	2,603,873		38,399		(39,119)		2,603,153		3.83
	3,542,438		40,997		(50,234)		3,533,201		4.17
Held-to-maturity securities
Mortgage-backed securities
Agency pass-through certificates	645,802		4,073		(37,136)		612,739		3.85
	$4,188,240		$45,070		$(87,370)		$4,145,940		4.12%

September 30, 2024	Amortized Cost		Gross Unrealized				Fair Value		Yield
			Gains		Losses
	($ in thousands)
Available-for-sale securities
U.S. government and agency securities due
Within 1 year	$4,360		$4		$—		$4,364		5.58%
1 to 5 years	4,640		2		(124)		4,518		2.82
5 to 10 years	166,070		1,230		—		167,300		5.97
Over 10 years	137,799		394		(171)		138,022		6.29
Asset-backed securities due
1 to 5 years	11,466		—		(284)		11,182		6.04
5 to 10 years	9,631		—		(3)		9,628		6.20
Over 10 years	520,756		600		(2,041)		519,315		6.15
Corporate debt securities due
Within 1 year	45,024		—		(367)		44,657		4.61
1 to 5 years	99,244		977		—		100,221		5.39
5 to 10 years	112,029		—		(10,625)		101,404		3.87
Over 10 years	50,000		—		—		50,000		6.85
Municipal bonds due
5 to 10 years	5,689		—		(243)		5,446		3.00
Over 10 years	29,793		—		(166)		29,627		5.85
Mortgage-backed securities
Agency pass-through certificates	1,420,376		7,324		(40,675)		1,387,025		4.09
	2,616,877		10,531		(54,699)		2,572,709		4.87
Held-to-maturity securities
Mortgage-backed securities
Agency pass-through certificates	436,972		913		(36,839)		401,046		3.18
	$3,053,849		$11,444		$(91,538)		$2,973,755		4.63%

Schedule of Unrealized Losses and Fair Value of Securities

The following tables show the gross unrealized losses and fair value of securities as of September 30, 2025 and September 30,

2024, by length of time that individual securities in each category have been in a continuous loss position. There were 213 and

209 securities with an unrealized loss as of September 30, 2025 and September 30, 2024, respectively. The decline in fair value

since purchase is attributable to changes in interest rates. Because the Company does not intend to sell these securities and does

not consider it more likely than not that it will be required to sell these securities before the recovery of amortized cost basis,

which may be upon maturity, the Company does not consider these investments to be impaired.

September 30, 2025	Less than 12 months				12 months or more				Total
	Unrealized Gross Losses		Fair Value		Unrealized Gross Losses		Fair Value		Unrealized Gross Losses		Fair Value
	(In thousands)
Available-for-sale securities
Corporate debt securities	$(119)		$19,881		$(8,495)		$102,342		$(8,614)		$122,223
Municipal bonds	—		—		(405)		15,008		(405)		15,008
U.S. government and agency securities	(483)		143,444		(127)		35,211		(610)		178,655
Asset-backed securities	(62)		34,932		(1,424)		135,315		(1,486)		170,247
Mortgage-backed securities	(782)		81,025		(38,337)		653,800		(39,119)		734,825
	(1,446)		279,282		(48,788)		941,676		(50,234)		1,220,958
Held-to-maturity securities
Mortgage-backed securities	—		—		(37,136)		310,597		(37,136)		310,597
	$(1,446)		$279,282		$(85,924)		$1,252,273		$(87,370)		$1,531,555

September 30, 2024	Less than 12 months				12 months or more				Total
	Unrealized Gross Losses		Fair Value		Unrealized Gross Losses		Fair Value		Unrealized Gross Losses		Fair Value
	(In thousands)
Available-for-sale securities
Corporate debt securities	$—		$—		$(10,993)		$146,060		$(10,993)		$146,060
Municipal bonds due	(15)		19,985		(394)		15,088		(409)		35,073
Asset-backed securities	(249)		116,173		(2,373)		235,846		(2,622)		352,019
Mortgage-backed securities	(165)		103,283		(40,510)		728,968		(40,675)		832,251
	(429)		239,441		(54,270)		1,125,962		(54,699)		1,365,403
Held-to-maturity securities
Mortgage-backed securities	—		—		(36,839)		348,573		(36,839)		348,573
	$(429)		$239,441		$(91,109)		$1,474,535		$(91,538)		$1,713,976

Schedule of Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, Fair Value

The following tables show the gross unrealized losses and fair value of securities as of September 30, 2025 and September 30,

2024, by length of time that individual securities in each category have been in a continuous loss position. There were 213 and

209 securities with an unrealized loss as of September 30, 2025 and September 30, 2024, respectively. The decline in fair value

since purchase is attributable to changes in interest rates. Because the Company does not intend to sell these securities and does

not consider it more likely than not that it will be required to sell these securities before the recovery of amortized cost basis,

which may be upon maturity, the Company does not consider these investments to be impaired.

September 30, 2025	Less than 12 months				12 months or more				Total
	Unrealized Gross Losses		Fair Value		Unrealized Gross Losses		Fair Value		Unrealized Gross Losses		Fair Value
	(In thousands)
Available-for-sale securities
Corporate debt securities	$(119)		$19,881		$(8,495)		$102,342		$(8,614)		$122,223
Municipal bonds	—		—		(405)		15,008		(405)		15,008
U.S. government and agency securities	(483)		143,444		(127)		35,211		(610)		178,655
Asset-backed securities	(62)		34,932		(1,424)		135,315		(1,486)		170,247
Mortgage-backed securities	(782)		81,025		(38,337)		653,800		(39,119)		734,825
	(1,446)		279,282		(48,788)		941,676		(50,234)		1,220,958
Held-to-maturity securities
Mortgage-backed securities	—		—		(37,136)		310,597		(37,136)		310,597
	$(1,446)		$279,282		$(85,924)		$1,252,273		$(87,370)		$1,531,555

September 30, 2024	Less than 12 months				12 months or more				Total
	Unrealized Gross Losses		Fair Value		Unrealized Gross Losses		Fair Value		Unrealized Gross Losses		Fair Value
	(In thousands)
Available-for-sale securities
Corporate debt securities	$—		$—		$(10,993)		$146,060		$(10,993)		$146,060
Municipal bonds due	(15)		19,985		(394)		15,088		(409)		35,073
Asset-backed securities	(249)		116,173		(2,373)		235,846		(2,622)		352,019
Mortgage-backed securities	(165)		103,283		(40,510)		728,968		(40,675)		832,251
	(429)		239,441		(54,270)		1,125,962		(54,699)		1,365,403
Held-to-maturity securities
Mortgage-backed securities	—		—		(36,839)		348,573		(36,839)		348,573
	$(429)		$239,441		$(91,109)		$1,474,535		$(91,538)		$1,713,976

X

- Definition

Tabular disclosure of fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in unrealized loss position, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 326
-SubTopic 30
-Name Accounting Standards Codification
-Section 55
-Paragraph 8
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479081/326-30-55-8

Reference 2: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481800/320-10-50-6

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479106/326-30-50-4

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Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, Fair Value

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