Accumulated Other Comprehensive Income (Tables)

9 Months Ended

Jun. 30, 2023

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 periods indicated.

	For the Three Months Ended June 30, 2023
	Unrealized		Unrealized
	Gains (Losses)		Gains (Losses)
	on AFS		on Cash Flow		Total
	Securities		Hedges		AOCI
	(Dollars in thousands)
Beginning balance	$	(125,292)	$	6,649	$	(118,643)
Other comprehensive income (loss), before reclassifications	(10,765)		4,369		(6,396)
Amount reclassified from AOCI, net of taxes of $538	—		(1,667)		(1,667)
Other comprehensive income (loss)	(10,765)		2,702		(8,063)
Ending balance	$	(136,057)	$	9,351	$	(126,706)

	For the Nine Months Ended June 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 (loss), before reclassifications	19,062		3,589		22,651
Amount reclassified from AOCI, net of taxes of $1,202	—		(3,724)		(3,724)
Other comprehensive income (loss)	19,062		(135)		18,927
Ending balance	$	(136,057)	$	9,351	$	(126,706)

	For the Three Months Ended June 30, 2022
	Unrealized		Unrealized
	Gains (Losses)		Gains (Losses)
	on AFS		on Cash Flow		Total
	Securities		Hedges		AOCI
	(Dollars in thousands)
Beginning balance	$	(71,776)	$	(4,131)	$	(75,907)
Other comprehensive income (loss), before reclassifications	(31,117)		3,798		(27,319)
Amount reclassified from AOCI, net of taxes of $(420)	—		1,301		1,301
Other comprehensive income (loss)	(31,117)		5,099		(26,018)
Ending balance	$	(102,893)	$	968	$	(101,925)

	For the Nine Months Ended June 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	(107,544)		17,127		(90,417)
Amount reclassified from AOCI, net of taxes of $(1,548)	—		4,797		4,797
Other comprehensive income (loss)	(107,544)		21,924		(85,620)
Ending balance	$	(102,893)	$	968	$	(101,925)