Accumulated Other Comprehensive Income (Tables)

12 Months Ended

Sep. 30, 2024

Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]

Schedule of Accumulated Other Comprehensive Income (Loss)

The following tables present the changes in the components of AOCI, net of tax, for the years presented.

	For the Year Ended September 30, 2024
	Unrealized		Unrealized
	Gains (Losses)		Gains (Losses)
	on AFS		on Cash Flow		Total
	Securities		Hedges		AOCI
	(Dollars in thousands)
Beginning balance	$	(1,142)	$	9,842	$	8,700
Other comprehensive income (loss), before reclassifications	22,362		(2,135)		20,227
Amount reclassified from AOCI, net of taxes of $1,967	—		(6,112)		(6,112)
Reclassification adjustment on AFS securities included in net income, net of taxes of $383	(1,188)		—		(1,188)
Other comprehensive income (loss)	21,174		(8,247)		12,927
Ending balance	$	20,032	$	1,595	$	21,627

	For the Year Ended September 30, 2023
	Unrealized		Unrealized
	Gains (Losses)		Gains (Losses)
	on AFS		on Cash Flow		Total
	Securities		Hedges		AOCI
	(Dollars in thousands)
Beginning balance	$	(155,119)	$	9,486	$	(145,633)
Other comprehensive income, before reclassifications	8,355		5,957		14,312
Amount reclassified from AOCI, net of taxes of $1,808	—		(5,601)		(5,601)
Reclassification adjustment on AFS securities included in net income, net of taxes of $(47,000)	145,622		—		145,622
Other comprehensive income	153,977		356		154,333
Ending balance	$	(1,142)	$	9,842	$	8,700

	For the Year Ended September 30, 2022
	Unrealized		Unrealized
	Gains (Losses)		Gains (Losses)
	on AFS		on Cash Flow		Total
	Securities		Hedges		AOCI
	(Dollars in thousands)
Beginning balance	$	4,651	$	(20,956)	$	(16,305)
Other comprehensive income (loss), before reclassifications	(159,770)		25,339		(134,431)
Amount reclassified from AOCI, net of taxes of $(1,647)	—		5,103		5,103
Other comprehensive income (loss)	(159,770)		30,442		(129,328)
Ending balance	$	(155,119)	$	9,486	$	(145,633)