Accumulated Other Comprehensive Income (Tables)

6 Months Ended

Mar. 31, 2021

Equity [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 March 31, 2021
	Unrealized		Unrealized
	Gains (Losses)		Gains (Losses)
	on AFS		on Cash Flow		Total
	Securities		Hedges		AOCI
	(Dollars in thousands)
Beginning balance	$	24,868	$	(36,239)	$	(11,371)
Other comprehensive income (loss), before reclassifications	(20,934)		6,931		(14,003)
Amount reclassified from AOCI, net of taxes of $(2,072)	—		6,421		6,421
Other comprehensive income (loss)	(20,934)		13,352		(7,582)
Ending balance	$	3,934	$	(22,887)	$	(18,953)

	For the Six Months Ended March 31, 2021
	Unrealized		Unrealized
	Gains (Losses)		Gains (Losses)
	on AFS		on Cash Flow		Total
	Securities		Hedges		AOCI
	(Dollars in thousands)
Beginning balance	$	23,728	$	(40,233)	$	(16,505)
Other comprehensive income (loss), before reclassifications	(19,794)		7,955		(11,839)
Amount reclassified from AOCI, net of taxes of $(3,031)	—		9,391		9,391
Other comprehensive income (loss)	(19,794)		17,346		(2,448)
Ending balance	$	3,934	$	(22,887)	$	(18,953)

	For the Three Months Ended March 31, 2020
	Unrealized		Unrealized
	Gains (Losses)		Gains (Losses)
	on AFS		on Cash Flow		Total
	Securities		Hedges		AOCI
	(Dollars in thousands)
Beginning balance	$	9,698	$	(19,625)	$	(9,927)
Other comprehensive income (loss), before reclassifications	10,378		(23,412)		(13,034)
Amount reclassified from AOCI, net of taxes of $(315)	—		983		983
Other comprehensive income (loss)	10,378		(22,429)		(12,051)
Ending balance	$	20,076	$	(42,054)	$	(21,978)

	For the Six Months Ended March 31, 2020
	Unrealized		Unrealized
	Gains (Losses)		Gains (Losses)
	on AFS		on Cash Flow		Total
	Securities		Hedges		AOCI
	(Dollars in thousands)
Beginning balance	$	10,150	$	(25,049)	$	(14,899)
Other comprehensive income (loss), before reclassifications	9,926		(18,697)		(8,771)
Amount reclassified from AOCI, net of taxes of $(543)	—		1,692		1,692
Other comprehensive income (loss)	9,926		(17,005)		(7,079)
Ending balance	$	20,076	$	(42,054)	$	(21,978)