Securities (Tables)
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9 Months Ended |
Jun. 30, 2018 |
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| Marketable Securities [Abstract] |
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| 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 |
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| | | | | | | | | | | | | | | | | | 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 |
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| Amortized Cost, Estimated Fair Value, And Gross Unrealized Gains And Losses Of HTM 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 |
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| | | | | | | | | | | | | | | | | | 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 |
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| 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 |
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| | | | | | | | | | | | | | | | | | 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 |
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| 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 |
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| 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 |
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| 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 |
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