Securities (Tables)

9 Months Ended

Jun. 30, 2018

Amortized Cost, Estimated Fair Value, And Gross Unrealized Gains And Losses Of AFS Securities

The following tables reflect the amortized cost, estimated fair value, and gross unrealized gains and losses of AFS and HTM securities at the dates presented. The majority of the MBS and investment securities portfolios are composed of securities issued by United States government-sponsored enterprises ("GSEs").



	June 30, 2018
			Gross		Gross		Estimated
	Amortized		Unrealized		Unrealized		Fair
	Cost		Gains		Losses		Value
	(Dollars in thousands)
AFS:
MBS	$	314,192	$	3,917	$	2,121	$	315,988
GSE debentures	240,543		102		2,779		237,866
Municipal bonds	1,522		—		15		1,507
	$	556,257	$	4,019	$	4,915	$	555,361
HTM:
MBS	$	642,281	$	5,124	$	14,576	$	632,829
Municipal bonds	22,241		3		108		22,136
	$	664,522	$	5,127	$	14,684	$	654,965



	September 30, 2017
			Gross		Gross		Estimated
	Amortized		Unrealized		Unrealized		Fair
	Cost		Gains		Losses		Value
	(Dollars in thousands)
AFS:
GSE debentures	$	271,300	$	16	$	587	$	270,729
MBS	135,644		5,923		51		141,516
Trust preferred securities	2,067		—		16		2,051
Municipal bonds	1,530		5		—		1,535
	$	410,541	$	5,944	$	654	$	415,831
HTM:
MBS	$	800,931	$	10,460	$	5,295	$	806,096
Municipal bonds	26,807		119		13		26,913
	$	827,738	$	10,579	$	5,308	$	833,009

Amortized Cost, Estimated Fair Value, And Gross Unrealized Gains And Losses Of HTM Securities



	June 30, 2018
			Gross		Gross		Estimated
	Amortized		Unrealized		Unrealized		Fair
	Cost		Gains		Losses		Value
	(Dollars in thousands)
AFS:
MBS	$	314,192	$	3,917	$	2,121	$	315,988
GSE debentures	240,543		102		2,779		237,866
Municipal bonds	1,522		—		15		1,507
	$	556,257	$	4,019	$	4,915	$	555,361
HTM:
MBS	$	642,281	$	5,124	$	14,576	$	632,829
Municipal bonds	22,241		3		108		22,136
	$	664,522	$	5,127	$	14,684	$	654,965



	September 30, 2017
			Gross		Gross		Estimated
	Amortized		Unrealized		Unrealized		Fair
	Cost		Gains		Losses		Value
	(Dollars in thousands)
AFS:
GSE debentures	$	271,300	$	16	$	587	$	270,729
MBS	135,644		5,923		51		141,516
Trust preferred securities	2,067		—		16		2,051
Municipal bonds	1,530		5		—		1,535
	$	410,541	$	5,944	$	654	$	415,831
HTM:
MBS	$	800,931	$	10,460	$	5,295	$	806,096
Municipal bonds	26,807		119		13		26,913
	$	827,738	$	10,579	$	5,308	$	833,009

Schedule Of Estimated Fair Value And Gross Unrealized Losses Of Securities In Continuous Unrealized Loss Position

The following tables summarize the estimated fair value and gross unrealized losses of those securities on which an unrealized loss at the dates presented was reported and the continuous unrealized loss position for less than 12 months and equal to or greater than 12 months as of the dates presented.



	June 30, 2018
	Less Than 12 Months				Equal to or Greater Than 12 Months
	Estimated		Unrealized		Estimated		Unrealized
	Fair Value		Losses		Fair Value		Losses
	(Dollars in thousands)
AFS:
GSE debentures	$	123,539	$	1,460	$	98,653	$	1,319
MBS	215,904		2,116		591		5
Municipal bonds	1,507		15		—		—
	$	340,950	$	3,591	$	99,244	$	1,324


HTM:
MBS	$	200,386	$	4,206	$	255,472	$	10,370
Municipal bonds	18,229		108		—		—
	$	218,615	$	4,314	$	255,472	$	10,370



	September 30, 2017
	Less Than 12 Months				Equal to or Greater Than 12 Months
	Estimated		Unrealized		Estimated		Unrealized
	Fair Value		Losses		Fair Value		Losses
	(Dollars in thousands)
AFS:
GSE debentures	$	224,421	$	539	$	24,952	$	48
MBS	9,648		46		673		5
Trust preferred securities	—		—		2,051		16
	$	234,069	$	585	$	27,676	$	69


HTM:
MBS	$	259,200	$	1,582	$	201,094	$	3,713
Municipal bonds	5,638		8		1,460		5
	$	264,838	$	1,590	$	202,554	$	3,718

Schedule Of Contractual Maturities

The amortized cost and estimated fair value of debt securities as of June 30, 2018, by contractual maturity, are shown below. Actual principal repayments may differ from contractual maturities due to prepayment or early call privileges by the issuer. In the case of MBS, borrowers on the underlying loans generally have the right to prepay their loans without prepayment penalty. For this reason, MBS are not included in the maturity categories.



	AFS				HTM
	Amortized		Estimated		Amortized		Estimated
	Cost		Fair Value		Cost		Fair Value
	(Dollars in thousands)
One year or less	$	50,000	$	49,758	$	5,102	$	5,098
One year through five years	192,065		189,615		17,139		17,038
	242,065		239,373		22,241		22,136
MBS	314,192		315,988		642,281		632,829
	$	556,257	$	555,361	$	664,522	$	654,965

Schedule Of Taxable And Non-taxable Components Of Interest Income

The following table presents the taxable and non-taxable components of interest income on investment securities for the periods presented.



	For the Three Months Ended				For the Nine Months Ended
	June 30,				June 30,
	2018		2017		2018		2017
	(Dollars in thousands)
Taxable	$	1,214	$	941	$	3,092	$	2,905
Non-taxable	93		122		303		396
	$	1,307	$	1,063	$	3,395	$	3,301

Schedule Of Carrying Value Of Securities Pledged As Collateral

The following table summarizes the carrying value of securities pledged as collateral for the obligations indicated below as of the dates presented.



	June 30, 2018		September 30, 2017
	(Dollars in thousands)
Public unit deposits	$	454,721	$	499,993
Repurchase agreements	108,546		214,298
Federal Reserve Bank of Kansas City ("FRB of Kansas City")	7,959		11,769
	$	571,226	$	726,060