Capitol Federal Financial (CFFN) 10-Q 10 May 17 2017 Q2 Quarterly report Financial data

Document And Entity Information

Document And Entity Information - shares	6 Months Ended
	Mar. 31, 2017	May 04, 2017
Document And Entity Information [Abstract]
Entity Registrant Name	Capitol Federal Financial Inc
Trading Symbol	cffn
Entity Central Index Key	1,490,906
Current Fiscal Year End Date	--09-30
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Document Period End Date	Mar. 31, 2017
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	Q2
Amendment Flag	false
Entity Common Stock, Shares Outstanding		138,201,735

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2017	Sep. 30, 2016
ASSETS:
Cash and cash equivalents (includes interest-earning deposits of $226,160 and $267,829)	$ 240,587	$ 281,764
Securities:
Available-for-sale (AFS), at estimated fair value (amortized cost of $458,295 and $517,791)	465,083	527,301
Held-to-maturity (HTM), at amortized cost (estimated fair value of $959,541 and $1,122,867)	954,110	1,100,874
Loans receivable, net (allowance for credit losses (ACL) of $8,447 and $8,540)	7,193,721	6,958,024
Federal Home Loan Bank Topeka (FHLB) stock, at cost	105,475	109,970
Premises and equipment, net	83,248	83,221
Other assets	204,166	206,093
TOTAL ASSETS	9,246,390	9,267,247
LIABILITIES:
Deposits	5,269,234	5,164,018
FHLB borrowings	2,273,113	2,372,389
Repurchase agreements	200,000	200,000
Advance payments by borrowers for taxes and insurance	54,790	62,643
Income taxes payable, net	728	310
Deferred income tax liabilities, net	24,860	25,374
Accounts payable and accrued expenses	41,376	49,549
Total liabilities	7,864,101	7,874,283
STOCKHOLDERS' EQUITY:
Preferred stock, $.01 par value; 100,000,000 shares authorized, no shares issued or outstanding	0	0
Common stock, $.01 par value; 1,400,000,000 shares authorized, 138,187,735 and 137,486,172 shares issued and outstanding as of March 31, 2017 and September 30, 2016, respectively	1,382	1,375
Additional paid-in capital	1,166,459	1,156,855
Unearned compensation, Employee Stock Ownership Plan (ESOP)	(38,821)	(39,647)
Retained earnings	249,047	268,466
Accumulated other comprehensive income (AOCI), net of tax	4,222	5,915
Total stockholders' equity	1,382,289	1,392,964
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 9,246,390	$ 9,267,247

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2017	Sep. 30, 2016
Statement of Financial Position [Abstract]
Interest-earning deposits	$ 226,160	$ 267,829
Available-for-sale securities, amortized cost	458,295	517,791
Held-to-maturity securities, estimated fair value	959,541	1,122,867
Loans receivable, allowance for credit losses	$ 8,447	$ 8,540
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	100,000,000	100,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	1,400,000,000	1,400,000,000
Common stock, shares issued	138,187,735	137,486,172
Common stock, shares outstanding	138,187,735	137,486,172

Consolidated Statements Of Inco

Consolidated Statements Of Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016
INTEREST AND DIVIDEND INCOME:
Loans receivable	$ 63,106	$ 60,732	$ 125,051	$ 120,955
Mortgage-backed securities (MBS)	6,191	7,702	12,553	15,533
Cash and cash equivalents	4,132	2,707	7,101	4,327
FHLB stock	3,100	3,006	6,039	6,158
Investment securities	1,131	1,485	2,238	3,018
Total interest and dividend income	77,660	75,632	152,982	149,991
INTEREST EXPENSE:
FHLB borrowings	16,771	16,394	32,888	32,468
Deposits	10,364	9,213	20,760	18,012
Repurchase agreements	1,471	1,487	2,974	2,991
Total interest expense	28,606	27,094	56,622	53,471
NET INTEREST INCOME	49,054	48,538	96,360	96,520
PROVISION FOR CREDIT LOSSES	0	0	0	0
NET INTEREST INCOME AFTER PROVISION FOR CREDIT LOSSES	49,054	48,538	96,360	96,520
NON-INTEREST INCOME:
Retail fees and charges	3,582	3,558	7,291	7,372
Income from bank-owned life insurance (BOLI)	573	1,459	1,096	2,162
Other non-interest income	1,418	1,609	2,454	2,658
Total non-interest income	5,573	6,626	10,841	12,192
NON-INTEREST EXPENSE:
Salaries and employee benefits	10,544	10,288	21,178	20,775
Information technology and communications	2,768	2,609	5,602	5,167
Occupancy, net	2,764	2,616	5,439	5,288
Deposit and loan transaction costs	1,228	1,396	2,614	2,670
Regulatory and outside services	1,265	1,144	2,611	2,630
Advertising and promotional	1,263	983	1,953	2,137
Federal insurance premium	878	1,399	1,772	2,781
Office supplies and related expense	541	584	978	1,471
Low income housing partnerships	0	1,321	0	2,094
Other non-interest expense	686	1,086	1,387	2,003
Total non-interest expense	21,937	23,426	43,534	47,016
INCOME BEFORE INCOME TAX EXPENSE	32,690	31,738	63,667	61,696
INCOME TAX EXPENSE	11,103	10,211	21,502	19,451
NET INCOME	$ 21,587	$ 21,527	$ 42,165	$ 42,245
Basic earnings per share (EPS)	$ 0.16	$ 0.16	$ 0.31	$ 0.32
Diluted EPS	0.16	0.16	0.31	0.32
Dividends declared per share	$ 0.09	$ 0.09	$ 0.46	$ 0.42
Basic weighted average common shares	134,066,189	132,960,030	133,879,350	132,890,781
Diluted weighted average common shares	134,258,822	133,031,042	134,102,447	132,971,254

Consolidated Statements Of Comp

Consolidated Statements Of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016
Statement of Comprehensive Income [Abstract]
Net income	$ 21,587	$ 21,527	$ 42,165	$ 42,245
Other comprehensive income (loss), net of tax:
Changes in unrealized holding gains (losses) on AFS securities, net of taxes of $230, $(874), $1,029 and $826	(379)	1,438	(1,693)	(1,360)
Comprehensive income	$ 21,208	$ 22,965	$ 40,472	$ 40,885

Consolidated Statements Of Com6

Consolidated Statements Of Comprehensive Income (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016
Statement of Comprehensive Income [Abstract]
Changes in net unrealized holding gains (losses) on AFS securities, amount of taxes	$ 230	$ (874)	$ 1,029	$ 826

Consolidated Statements Of Stoc

Consolidated Statements Of Stockholders' Equity - 6 months ended Mar. 31, 2017 - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-In Capital [Member]	Unearned Compensation ESOP [Member]	Retained Earnings [Member]	AOCI [Member]
Balance at Sep. 30, 2016	$ 1,392,964	$ 1,375	$ 1,156,855	$ (39,647)	$ 268,466	$ 5,915
Net income	42,165				42,165
Other comprehensive income (loss), net of tax	(1,693)					(1,693)
ESOP activity, net	1,269		443	826
Restricted stock activity, net	40		40
Stock-based compensation	330		330
Stock options exercised	8,798	7	8,791
Cash dividends to stockholders ($0.46 per share)	(61,584)				(61,584)
Balance at Mar. 31, 2017	$ 1,382,289	$ 1,382	$ 1,166,459	$ (38,821)	$ 249,047	$ 4,222

Consolidated Statements Of Sto8

Consolidated Statements Of Stockholders' Equity (Parenthetical) - $ / shares	3 Months Ended		6 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016
Statement of Stockholders' Equity [Abstract]
Cash dividends to stockholders	$ 0.09	$ 0.09	$ 0.46	$ 0.42

Consolidated Statements Of Cash

Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 42,165	$ 42,245
Adjustments to reconcile net income to net cash provided by operating activities:
FHLB stock dividends	(6,039)	(6,158)
Amortization and accretion of premiums and discounts on securities	2,438	2,486
Depreciation and amortization of premises and equipment	3,831	3,475
Amortization of deferred amounts related to FHLB advances, net	724	1,135
Common stock committed to be released for allocation - ESOP	1,269	1,039
Stock-based compensation	330	783
Changes in:
Other assets, net	1,178	353
Income taxes payable/receivable	651	3,240
Accounts payable and accrued expenses	(8,086)	(4,901)
Net cash provided by operating activities	38,461	43,697
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchase of AFS securities	(37,425)	(74,987)
Purchase of HTM securities	0	(144,392)
Proceeds from calls, maturities and principal reductions of AFS securities	96,902	153,512
Proceeds from calls, maturities and principal reductions of HTM securities	144,345	142,223
Proceeds from the redemption of FHLB stock	193,450	189,000
Purchase of FHLB stock	(182,916)	(146,680)
Net increase in loans receivable	(237,470)	(146,790)
Purchase of premises and equipment	(3,966)	(8,446)
Proceeds from sale of other real estate owned (OREO)	2,865	1,096
Proceeds from BOLI death benefit	0	783
Net cash used in investing activities	(24,215)	(34,681)
CASH FLOWS FROM FINANCING ACTIVITIES:
Cash dividends paid	(61,584)	(55,856)
Net change in deposits	105,216	287,309
Proceeds from borrowings	2,100,000	3,600,000
Repayments on borrowings	(2,200,000)	(4,400,000)
Change in advance payments by borrowers for taxes and insurance	(7,853)	(9,589)
Stock options exercised	8,476	299
Excess tax benefits from stock options	322	0
Net cash used in financing activities	(55,423)	(577,837)
NET DECREASE IN CASH AND CASH EQUIVALENTS	(41,177)	(568,821)
CASH AND CASH EQUIVALENTS:
Beginning of period	281,764	772,632
End of period	240,587	203,811
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION:
Income tax payments	17,996	16,212
Interest payments	$ 57,140	$ 51,766

Summary Of Significant Accounti

Summary Of Significant Accounting Policies	6 Months Ended
	Mar. 31, 2017
Accounting Policies [Abstract]
Summary Of Significant Accounting Policies	SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Basis of Presentation - The consolidated financial statements include the accounts of Capitol Federal® Financial, Inc. (the "Company") and its wholly-owned subsidiary, Capitol Federal Savings Bank (the "Bank"). The Bank has a wholly-owned subsidiary, Capitol Funds, Inc. Capitol Funds, Inc. has a wholly-owned subsidiary, Capitol Federal Mortgage Reinsurance Company. All intercompany accounts and transactions have been eliminated in consolidation. The consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America ("GAAP") for interim financial information and with the instructions to Form 10-Q and Rule 10-01 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by GAAP for complete financial statements. In the opinion of management, all adjustments (consisting of normal recurring adjustments) considered necessary for a fair presentation have been included. These statements should be read in conjunction with the consolidated financial statements and notes thereto included in the Company's Annual Report on Form 10-K for the fiscal year ended September 30, 2016 , filed with the Securities and Exchange Commission ("SEC"). Interim results are not necessarily indicative of results for a full year. Net Presentation of Cash Flows Related to Borrowings - Beginning in fiscal year 2014, the Bank implemented a leverage strategy ("leverage strategy") to increase earnings. This leverage strategy involves borrowing up to $2.10 billion either on the Bank's FHLB line of credit or by entering into short-term FHLB advances, depending on the rates offered by the FHLB at the time of the borrowings, with some or all of the balance being repaid prior to the end of each quarter for regulatory purposes. Proceeds from the borrowings, net of required FHLB stock holdings, are deposited at the Federal Reserve Bank of Kansas City (the "FRB of Kansas City"). The contractual maturities of the FHLB advances utilized in conjunction with the leverage strategy beginning in the current fiscal year are seven days or less; therefore, cash flows related to these advances are reported on a net basis within the consolidated statements of cash flows. Low Income Housing Partnerships - As part of the Bank's community reinvestment initiatives, the Bank invests in affordable housing limited partnerships ("low income housing partnerships") that make equity investments in affordable housing properties. The Bank is a limited partner in each partnership in which it invests. A separate, unrelated third party is the general partner. The Bank receives affordable housing tax credits and other tax benefits for these investments. Prior to October 1, 2016, the Bank accounted for its low income housing partnership investments using the equity method of accounting, as two of the Bank's officers were involved in the operational management of the low income housing partnership investment group. On October 1, 2016, due to both officers' resignation from operational management, the Bank began using the proportional method of accounting for its low income housing partnership investments. Recent Accounting Pronouncements - In May 2014, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2014-09, Revenue from Contracts with Customers . The ASU, as amended, clarifies principles for recognizing revenue and provides a common revenue standard for GAAP and International Financial Reporting Standards. Additionally, the ASU provides implementation guidance on several topics and requires entities to disclose both quantitative and qualitative information regarding contracts with customers. ASU 2014-09 will become effective for the Company on October 1, 2018. The scope of the amended ASU explicitly excludes interest income from loans and securities; therefore, the Company anticipates that the majority of its revenue will not be within the scope of the amended ASU. The Company is continuing to evaluate the amended ASU and its impact on the Company's consolidated financial condition, results of operations, and disclosures. In January 2016, the FASB issued ASU 2016-01, Financial Instruments, Recognition and Measurement of Financial Assets and Liabilities . The ASU supersedes certain accounting guidance related to equity securities with readily determinable fair values and the related impairment assessment. An entity's equity investments that are accounted for under the equity method of accounting or result in consolidation of an investee are not included within the scope of this ASU. The ASU requires public business entities to utilize the exit price notation in determining fair value for financial instruments measured at amortized cost on the balance sheet. The ASU requires additional reporting in other comprehensive income for financial liabilities measured at fair value in accordance with the fair value option. The ASU also requires separate presentation of financial assets and financial liabilities by measurement category and form of financial asset on the balances or in the notes to the financial statements. ASU 2016-01 will become effective for the Company on October 1, 2018. Early adoption is not permitted except in certain circumstances. The Company is currently evaluating the impact that this ASU may have on the Company's consolidated financial condition, results of operations and disclosures. In February 2016, the FASB issued ASU 2016-02, Leases . The ASU amends lease accounting guidance by requiring that lessees recognize the assets and liabilities arising from leases on the balance sheet. Additionally, the ASU requires entities to disclose both quantitative and qualitative information regarding their leasing activities. ASU 2016-02 will become effective for the Company on October 1, 2019. Early adoption is permitted. The Company is currently in the process of accumulating lease data and developing an inventory of leases. The Company expects to recognize right-of-use assets and lease liabilities for substantially all of its operating lease commitments based on the present value of unpaid lease payments as of the date of adoption. The Company is continuing to evaluate the impact this ASU may have on the Company's consolidated financial condition, results of operations and disclosures. In March 2016, the FASB issued ASU 2016-09, Compensation - Stock Compensation: Improvements to Employee Share-Based Payment Accounting . The ASU simplifies several aspects of the accounting for employee share-based payment transactions, including the accounting for income taxes, forfeitures, and statutory tax withholding requirements, along with simplifying the classification in the statement of cash flows. The ASU will become effective for the Company on October 1, 2017. Upon adoption, the Company intends to elect to account for forfeitures of stock-based compensation awards when they occur. The Company plans to recognize excess tax benefits and tax deficiencies in income tax expense on the consolidated statements of income and present them within operating activities on the consolidated statements of cash flows. While the adoption of the ASU is not expected to have a material impact on the Company's consolidated financial condition or results of operations, the impact of tax benefits and the timing of their recognition within income tax expense is unpredictable, as these benefits are recognized primarily as a result of stock options being exercised. In June 2016, the FASB issued ASU 2016-13, Financial Instruments - Credit Losses: Measurement of Credit Losses on Financial Instruments . The ASU replaces the incurred loss impairment methodology in current GAAP, which requires credit losses to be recognized when it is probable that a loss has incurred, with a new impairment methodology. The new impairment methodology requires an entity to measure, at each reporting date, the expected credit losses of financial assets not measured at fair value, such as loans, HTM debt securities, and loan commitments, over their contractual lives. Under the new impairment methodology, expected credit losses will be measured at each reporting date based on historical experience, current conditions, and reasonable and supportable forecasts. Additionally, the ASU amends the current credit loss measurements for AFS debt securities. Credit losses related to AFS debt securities will be recorded through the ACL rather than as a direct write-down as per current GAAP. The ASU also requires enhanced disclosures related to credit quality and significant estimates and judgments used by management when estimating credit losses. The ASU will become effective for the Company on October 1, 2020. Early adoption is permitted for fiscal years beginning after December 15, 2018. The Company is currently evaluating the ASU and is in the process of reviewing its systems and processes to support the data required to implement the ASU. In March 2017, the FASB issued ASU 2017-08, Premium Amortization on Purchased Callable Debt Securities . The amendments in this ASU shorten the amortization period for certain callable debt securities held at a premium. Specifically, the amendments require the premium to be amortized to the earliest call date. Under current GAAP, premiums on callable debt securities generally are amortized to the maturity date. The ASU will become effective for the Company on October 1, 2019. Early adoption is permitted, including adoption in an interim period. The Company is evaluating the ASU, but the ASU is not expected to have a material impact on the Company's consolidated financial condition or results of operations.

Earnings Per Share

Earnings Per Share	6 Months Ended
	Mar. 31, 2017
Earnings Per Share [Abstract]
Earnings Per Share	EARNINGS PER SHARE Shares acquired by the ESOP are not considered in the basic average shares outstanding until the shares are committed for allocation or vested to an employee's individual account. Unvested shares awarded pursuant to the Company's restricted stock benefit plans are treated as participating securities in the computation of EPS pursuant to the two-class method as they contain nonforfeitable rights to dividends. The two-class method is an earnings allocation that determines EPS for each class of common stock and participating security. For the Three Months Ended For the Six Months Ended March 31, March 31, 2017 2016 2017 2016 (Dollars in thousands, except per share amounts) Net income $ 21,587 $ 21,527 $ 42,165 $ 42,245 Income allocated to participating securities (12 ) (16 ) (25 ) (43 ) Net income available to common stockholders $ 21,575 $ 21,511 $ 42,140 $ 42,202 Average common shares outstanding 134,024,890 132,918,277 133,858,701 132,869,793 Average committed ESOP shares outstanding 41,299 41,753 20,649 20,988 Total basic average common shares outstanding 134,066,189 132,960,030 133,879,350 132,890,781 Effect of dilutive stock options 192,633 71,012 223,097 80,473 Total diluted average common shares outstanding 134,258,822 133,031,042 134,102,447 132,971,254 Net EPS: Basic $ 0.16 $ 0.16 $ 0.31 $ 0.32 Diluted $ 0.16 $ 0.16 $ 0.31 $ 0.32 Antidilutive stock options, excluded from the diluted average common shares outstanding calculation 187,327 921,199 212,133 898,386

Securities

Securities	6 Months Ended
	Mar. 31, 2017
Marketable Securities [Abstract]
Securities	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"). March 31, 2017 Gross Gross Estimated Amortized Unrealized Unrealized Fair Cost Gains Losses Value (Dollars in thousands) AFS: GSE debentures $ 296,266 $ 63 $ 741 $ 295,588 MBS 158,414 7,676 39 166,051 Trust preferred securities 2,080 — 166 1,914 Municipal bonds 1,535 — 5 1,530 $ 458,295 $ 7,739 $ 951 $ 465,083 HTM: MBS $ 924,819 $ 11,845 $ 6,456 $ 930,208 Municipal bonds 29,291 101 59 29,333 $ 954,110 $ 11,946 $ 6,515 $ 959,541 September 30, 2016 Gross Gross Estimated Amortized Unrealized Unrealized Fair Cost Gains Losses Value (Dollars in thousands) AFS: GSE debentures $ 346,226 $ 815 $ 3 $ 347,038 MBS 169,442 9,069 4 178,507 Trust preferred securities 2,123 — 367 1,756 $ 517,791 $ 9,884 $ 374 $ 527,301 HTM: MBS $ 1,067,571 $ 22,862 $ 1,219 $ 1,089,214 Municipal bonds 33,303 357 7 33,653 $ 1,100,874 $ 23,219 $ 1,226 $ 1,122,867 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. March 31, 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 $ 199,231 $ 741 $ — $ — MBS 10,628 34 629 5 Trust preferred securities — — 1,914 166 Municipal bonds 1,530 5 — — $ 211,389 $ 780 $ 2,543 $ 171 HTM: MBS $ 448,666 $ 4,533 $ 85,249 $ 1,923 Municipal bonds 9,062 57 447 2 $ 457,728 $ 4,590 $ 85,696 $ 1,925 September 30, 2016 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 $ 24,997 $ 3 $ — $ — MBS — — 654 4 Trust preferred securities — — 1,756 367 $ 24,997 $ 3 $ 2,410 $ 371 HTM: MBS $ 147,930 $ 538 $ 66,646 $ 681 Municipal bonds 4,771 6 391 1 $ 152,701 $ 544 $ 67,037 $ 682 The unrealized losses at March 31, 2017 and September 30, 2016 were primarily a result of an increase in market yields from the time the securities were purchased. In general, as market yields rise, the fair value of securities will decrease; as market yields fall, the fair value of securities will increase. Management generally views changes in fair value caused by changes in interest rates as temporary; therefore, these securities have not been classified as other-than-temporarily impaired. The impairment is also considered temporary because scheduled coupon payments have been made, it is anticipated that the entire principal balance will be collected as scheduled, and management neither intends to sell the securities, nor is it more likely than not that the Company will be required to sell the securities before the recovery of the remaining amortized cost amount, which could be at maturity. As a result of the analysis, management has concluded that no other-than-temporary impairments existed at March 31, 2017 or September 30, 2016 . The amortized cost and estimated fair value of debt securities as of March 31, 2017 , 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 $ 75,020 $ 75,020 $ 6,105 $ 6,142 One year through five years 222,781 222,098 20,997 20,986 Five years through ten years — — 2,189 2,205 Ten years and thereafter 2,080 1,914 — — 299,881 299,032 29,291 29,333 MBS 158,414 166,051 924,819 930,208 $ 458,295 $ 465,083 $ 954,110 $ 959,541 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 Six Months Ended March 31, March 31, 2017 2016 2017 2016 (Dollars in thousands) Taxable $ 1,000 $ 1,314 $ 1,964 $ 2,668 Non-taxable 131 171 274 350 $ 1,131 $ 1,485 $ 2,238 $ 3,018 The following table summarizes the carrying value of securities pledged as collateral for the obligations indicated below as of the dates presented. March 31, 2017 September 30, 2016 (Dollars in thousands) Public unit deposits $ 394,335 $ 419,282 Repurchase agreements 214,773 217,374 FRB of Kansas City 13,686 15,938 $ 622,794 $ 652,594

Loans Receivable And Allowance

Loans Receivable And Allowance For Credit Losses	6 Months Ended
	Mar. 31, 2017
Loans and Leases Receivable Disclosure [Abstract]
Loans Receivable And Allowance For Credit Losses	LOANS RECEIVABLE AND ALLOWANCE FOR CREDIT LOSSES Loans receivable, net at the dates presented is summarized as follows: March 31, 2017 September 30, 2016 (Dollars in thousands) Real estate loans: One- to four-family: Originated $ 4,025,985 $ 4,005,615 Correspondent purchased 2,396,663 2,206,072 Bulk purchased 385,700 416,653 Construction 30,818 39,430 Total 6,839,166 6,667,770 Commercial: Permanent 102,806 110,768 Construction 116,471 43,375 Total 219,277 154,143 Total real estate loans 7,058,443 6,821,913 Consumer loans: Home equity 119,434 123,345 Other 4,469 4,264 Total consumer loans 123,903 127,609 Total loans receivable 7,182,346 6,949,522 Less: ACL 8,447 8,540 Discounts/unearned loan fees 25,318 24,933 Premiums/deferred costs (45,140 ) (41,975 ) $ 7,193,721 $ 6,958,024 Lending Practices and Underwriting Standards - Originating and purchasing one- to four-family loans is the Bank's primary lending business, resulting in a loan concentration in residential first mortgage loans. The Bank purchases one- to four-family loans, on a loan-by-loan basis, from a select group of correspondent lenders. The Bank also originates consumer loans primarily secured by one- to four-family residential properties and originates and participates in commercial real estate loans. As a result of our one- to four-family lending activities, the Bank has a concentration of loans secured by real property located in Kansas and Missouri. One- to four-family loans - Full documentation to support an applicant's credit and income, and sufficient funds to cover all applicable fees and reserves at closing, are required on all loans. Generally, loans are underwritten according to the "ability to repay" and "qualified mortgage" standards, as issued by the Consumer Financial Protection Bureau ("CFPB"). Properties securing one- to four-family loans are appraised by either staff appraisers or fee appraisers, both of which are independent of the loan origination function and approved by our Board of Directors. The underwriting standards for loans purchased from correspondent and nationwide lenders are generally similar to the Bank's internal underwriting standards. The underwriting of loans purchased from correspondent lenders on a loan-by-loan basis is performed by the Bank's underwriters. The Bank also originates construction-to-permanent loans secured by one- to four-family residential real estate. Construction loans are obtained by homeowners who will occupy the property when construction is complete. Construction loans to builders for speculative purposes are not permitted by the Bank's lending policies. Construction draw requests and the supporting documentation are reviewed and approved by designated personnel. The Bank also performs regular documented inspections of the construction project to ensure the funds are being used for the intended purpose and the project is being completed according to the plans and specifications provided. Commercial real estate loans - The Bank's commercial real estate loans are originated by the Bank or are in participation with a lead bank. When underwriting a commercial real estate loan, several factors are considered, such as the income producing potential of the property, cash equity provided by the borrower, the financial strength of the borrower, managerial expertise of the borrower or tenant, feasibility studies, lending experience with the borrower and the marketability of the property. For commercial real estate participation loans, the Bank performs the same underwriting procedures as if the loan was being originated by the Bank. At the time of origination, loan-to-value ("LTV") ratios on commercial real estate loans generally do not exceed 80% of the appraised value of the property securing the loans and the minimum debt service coverage ratio is generally 1.25 . Appraisals on properties securing these loans are performed by independent state certified fee appraisers. Consumer loans - The Bank offers a variety of secured consumer loans, including home equity loans and lines of credit, home improvement loans, auto loans, and loans secured by savings deposits. The Bank also originates a very limited amount of unsecured loans. The Bank does not originate any consumer loans on an indirect basis, such as contracts purchased from retailers of goods or services which have extended credit to their customers. The majority of the consumer loan portfolio is comprised of home equity lines of credit for which the Bank also has the first mortgage or the home equity line of credit is in the first lien position. The underwriting standards for consumer loans include a determination of an applicant's payment history on other debts and an assessment of an applicant's ability to meet existing obligations and payments on the proposed loan. Although creditworthiness of an applicant is a primary consideration, the underwriting process also includes a comparison of the value of the security in relation to the proposed loan amount. Credit Quality Indicators - Based on the Bank's lending emphasis and underwriting standards, management has segmented the loan portfolio into three segments: (1) one- to four-family; (2) consumer; and (3) commercial real estate. The one- to four-family and consumer loan portfolios are further segmented into classes for purposes of providing disaggregated information about the credit quality of the loan portfolio. The classes are: one- to four-family - originated, one- to four-family - correspondent purchased, one- to four-family - bulk purchased, consumer - home equity, and consumer - other. The one- to four-family - correspondent purchased class was segregated from the one- to four-family originated class in the current fiscal year due to the size of the portfolio along with the loan product composition, geographic locations and inherent credit risks within the portfolio. The prior period information presented within this note has been conformed to the new loan class presentation. The Bank's primary credit quality indicators for the one- to four-family and consumer - home equity loan portfolios are delinquency status, asset classifications, LTV ratios, and borrower credit scores. The Bank's primary credit quality indicators for the commercial real estate and consumer - other loan portfolios are delinquency status and asset classifications. The following tables present the recorded investment, by class, in loans 30 to 89 days delinquent, loans 90 or more days delinquent or in foreclosure, total delinquent loans, current loans, and total recorded investment at the dates presented. The recorded investment in loans is defined as the unpaid principal balance of a loan, less charge-offs and inclusive of unearned loan fees and deferred costs. At March 31, 2017 and September 30, 2016 , all loans 90 or more days delinquent were on nonaccrual status. March 31, 2017 90 or More Days Total Total 30 to 89 Days Delinquent or Delinquent Current Recorded Delinquent in Foreclosure Loans Loans Investment (Dollars in thousands) One- to four-family - originated $ 10,853 $ 5,333 $ 16,186 $ 4,025,590 $ 4,041,776 One- to four-family - correspondent 749 908 1,657 2,428,961 2,430,618 One- to four-family - bulk purchased 3,556 7,178 10,734 376,937 387,671 Commercial real estate — — — 218,200 218,200 Consumer - home equity 761 423 1,184 118,250 119,434 Consumer - other 34 7 41 4,428 4,469 $ 15,953 $ 13,849 $ 29,802 $ 7,172,366 $ 7,202,168 September 30, 2016 90 or More Days Total Total 30 to 89 Days Delinquent or Delinquent Current Recorded Delinquent in Foreclosure Loans Loans Investment (Dollars in thousands) One- to four-family - originated $ 13,545 $ 8,153 $ 21,698 $ 4,007,012 $ 4,028,710 One- to four-family - correspondent 3,389 992 4,381 2,233,941 2,238,322 One- to four-family - bulk purchased 5,082 7,380 12,462 406,379 418,841 Commercial real estate — — — 153,082 153,082 Consumer - home equity 635 520 1,155 122,190 123,345 Consumer - other 62 9 71 4,193 4,264 $ 22,713 $ 17,054 $ 39,767 $ 6,926,797 $ 6,966,564 The recorded investment of mortgage loans secured by residential real estate properties for which formal foreclosure proceedings were in process as of March 31, 2017 and September 30, 2016 was $7.2 million and $5.7 million , respectively, which is included in loans 90 or more days delinquent or in foreclosure in the table above. The carrying value of residential OREO held as a result of obtaining physical possession upon completion of a foreclosure or through completion of a deed in lieu of foreclosure was $2.7 million at March 31, 2017 and $2.5 million at September 30, 2016 . The following table presents the recorded investment, by class, in loans classified as nonaccrual at the dates presented. March 31, 2017 September 30, 2016 (Dollars in thousands) One- to four-family - originated $ 15,974 $ 17,086 One- to four-family - correspondent 1,497 3,788 One- to four-family - bulk purchased 7,991 7,411 Commercial real estate — — Consumer - home equity 770 848 Consumer - other 7 10 $ 26,239 $ 29,143 In accordance with the Bank's asset classification policy, management regularly reviews the problem loans in the Bank's portfolio to determine whether any loans require classification. Loan classifications are defined as follows: • Special mention - These loans are performing loans on which known information about the collateral pledged or the possible credit problems of the borrower(s) have caused management to have doubts as to the ability of the borrower(s) to comply with present loan repayment terms and which may result in the future inclusion of such loans in the non-performing loan categories. • Substandard - A loan is considered substandard if it is inadequately protected by the current net worth and paying capacity of the obligor or of the collateral pledged, if any. Substandard loans include those characterized by the distinct possibility the Bank will sustain some loss if the deficiencies are not corrected. • Doubtful - Loans classified as doubtful have all the weaknesses inherent in those classified as substandard, with the added characteristic that the weaknesses present make collection or liquidation in full on the basis of currently existing facts and conditions and values highly questionable and improbable. • Loss - Loans classified as loss are considered uncollectible and of such little value that their continuance as assets on the books is not warranted. The following table sets forth the recorded investment in loans classified as special mention or substandard, by class, at the dates presented. Special mention and substandard loans are included in the ACL formula analysis model if the loans are not individually evaluated for loss. Loans classified as doubtful or loss are individually evaluated for loss. At the dates presented, there were no loans classified as doubtful, and all loans classified as loss were fully charged-off. March 31, 2017 September 30, 2016 Special Mention Substandard Special Mention Substandard (Dollars in thousands) One- to four-family - originated $ 9,081 $ 29,167 $ 10,242 $ 27,818 One- to four-family - correspondent 365 5,269 2,496 5,168 One- to four-family - bulk purchased 867 11,069 1,156 11,480 Commercial real estate — — — — Consumer - home equity 41 1,463 54 1,431 Consumer - other — 17 8 16 $ 10,354 $ 46,985 $ 13,956 $ 45,913 The following table shows the weighted average credit score and weighted average LTV for one- to four-family loans and consumer home equity loans at the dates presented. Borrower credit scores are intended to provide an indication as to the likelihood that a borrower will repay their debts. Credit scores are updated at least semiannually, with the last update in March 2017, from a nationally recognized consumer rating agency. The LTV ratios provide an estimate of the extent to which the Bank may incur a loss on any given loan that may go into foreclosure. The consumer - home equity LTV does not take into account the first lien position, if applicable. The LTV ratios were based on the current loan balance and either the lesser of the purchase price or original appraisal, or the most recent Bank appraisal, if available. In most cases, the most recent appraisal was obtained at the time of origination. March 31, 2017 September 30, 2016 Credit Score LTV Credit Score LTV One- to four-family - originated 767 63 % 766 63 % One- to four-family - correspondent 764 68 764 68 One- to four-family - bulk purchased 754 63 753 64 Consumer - home equity 756 19 755 20 765 64 764 64 Troubled Debt Restructurings ("TDRs") - The following tables present the recorded investment prior to restructuring and immediately after restructuring in all loans restructured during the periods presented. These tables do not reflect the recorded investment at the end of the periods indicated. Any increase in the recorded investment at the time of the restructuring was generally due to the capitalization of delinquent interest and/or escrow balances. For the Three Months Ended For the Six Months Ended March 31, 2017 March 31, 2017 Number Pre- Post- Number Pre- Post- of Restructured Restructured of Restructured Restructured Contracts Outstanding Outstanding Contracts Outstanding Outstanding (Dollars in thousands) One- to four-family - originated 43 $ 5,360 $ 5,492 81 $ 9,288 $ 9,677 One- to four-family - correspondent 3 260 261 3 260 261 One- to four-family - purchased 2 687 700 2 687 700 Commercial real estate — — — — — — Consumer - home equity 6 111 115 14 317 327 Consumer - other — — — — — — 54 $ 6,418 $ 6,568 100 $ 10,552 $ 10,965 For the Three Months Ended For the Six Months Ended March 31, 2016 March 31, 2016 Number Pre- Post- Number Pre- Post- of Restructured Restructured of Restructured Restructured Contracts Outstanding Outstanding Contracts Outstanding Outstanding (Dollars in thousands) One- to four-family - originated 28 $ 3,433 $ 3,542 58 $ 6,539 $ 6,707 One- to four-family - correspondent 4 826 833 4 826 833 One- to four-family - bulk purchased — — — 1 123 122 Commercial real estate — — — — — — Consumer - home equity 1 3 3 5 64 64 Consumer - other 1 8 8 1 8 8 34 $ 4,270 $ 4,386 69 $ 7,560 $ 7,734 The following table provides information on TDRs that became delinquent during the periods presented within 12 months after being restructured. For the Three Months Ended For the Six Months Ended March 31, 2017 March 31, 2016 March 31, 2017 March 31, 2016 Number of Recorded Number of Recorded Number of Recorded Number of Recorded Contracts Investment Contracts Investment Contracts Investment Contracts Investment (Dollars in thousands) One- to four-family - originated 11 $ 1,069 16 $ 1,802 22 $ 2,047 27 $ 2,602 One- to four-family - correspondent — — — — — — — — One- to four-family - bulk purchased — — — — — — — — Commercial real estate — — — — — — — — Consumer - home equity 5 224 2 13 9 339 4 91 Consumer - other — — — — — — — — 16 $ 1,293 18 $ 1,815 31 $ 2,386 31 $ 2,693 Impaired loans - The following information pertains to impaired loans, by class, as of the dates presented. A loan is considered impaired when, based on current information and events, it is probable that the Bank will be unable to collect all amounts due, including principal and interest, according to the contractual terms of the loan agreement. March 31, 2017 September 30, 2016 Unpaid Unpaid Recorded Principal Related Recorded Principal Related Investment Balance ACL Investment Balance ACL (Dollars in thousands) With no related allowance recorded One- to four-family - originated $ 24,560 $ 25,243 $ — $ 22,982 $ 23,640 $ — One- to four-family - correspondent 3,841 3,828 — 2,963 2,950 — One- to four-family - bulk purchased 10,821 12,388 — 10,985 12,684 — Commercial real estate — — — — — — Consumer - home equity 1,164 1,372 — 1,014 1,230 — Consumer - other 5 26 — 10 42 — 40,391 42,857 — 37,954 40,546 — With an allowance recorded One- to four-family - originated 12,381 12,415 72 13,430 13,476 125 One- to four-family - correspondent 1,993 1,991 7 2,662 2,664 4 One- to four-family - bulk purchased 1,279 1,249 19 1,650 1,627 49 Commercial real estate — — — — — — Consumer - home equity 394 394 17 548 548 38 Consumer - other 13 13 2 6 6 1 16,060 16,062 117 18,296 18,321 217 Total One- to four-family - originated 36,941 37,658 72 36,412 37,116 125 One- to four-family - correspondent 5,834 5,819 7 5,625 5,614 4 One- to four-family - bulk purchased 12,100 13,637 19 12,635 14,311 49 Commercial real estate — — — — — — Consumer - home equity 1,558 1,766 17 1,562 1,778 38 Consumer - other 18 39 2 16 48 1 $ 56,451 $ 58,919 $ 117 $ 56,250 $ 58,867 $ 217 The following information pertains to impaired loans, by class, for the periods presented. For the Three Months Ended For the Six Months Ended March 31, 2017 March 31, 2016 March 31, 2017 March 31, 2016 Average Interest Average Interest Average Interest Average Interest Recorded Income Recorded Income Recorded Income Recorded Income Investment Recognized Investment Recognized Investment Recognized Investment Recognized (Dollars in thousands) With no related allowance recorded One- to four-family - originated $ 23,825 $ 218 $ 11,381 $ 119 $ 23,139 $ 423 $ 11,059 $ 229 One- to four-family - correspondent 4,045 35 203 3 3,498 59 165 6 One- to four-family - bulk purchased 10,877 49 11,637 49 10,846 95 11,218 100 Commercial real estate — — — — — — — — Consumer - home equity 1,080 33 636 15 1,030 63 595 23 Consumer - other 10 — 14 — 10 — 12 — 39,837 335 23,871 186 38,523 640 23,049 358 With an allowance recorded One- to four-family - originated 12,145 125 25,437 256 12,859 250 26,089 507 One- to four-family - correspondent 1,477 11 2,216 16 1,982 32 1,783 30 One- to four-family - bulk purchased 1,481 5 1,515 7 1,473 10 2,601 14 Commercial real estate — — — — — — — — Consumer - home equity 505 14 957 15 553 29 963 26 Consumer - other 12 — 17 — 12 — 14 — 15,620 155 30,142 294 16,879 321 31,450 577 Total One- to four-family - originated 35,970 343 36,818 375 35,998 673 37,148 736 One- to four-family - correspondent 5,522 46 2,419 19 5,480 91 1,948 36 One- to four-family - bulk purchased 12,358 54 13,152 56 12,319 105 13,819 114 Commercial real estate — — — — — — — — Consumer - home equity 1,585 47 1,593 30 1,583 92 1,558 49 Consumer - other 22 — 31 — 22 — 26 — $ 55,457 $ 490 $ 54,013 $ 480 $ 55,402 $ 961 $ 54,499 $ 935 Allowance for Credit Losses - The following is a summary of ACL activity, by loan portfolio segment, for the periods presented, and the ending balance of ACL based on the Company's impairment methodology. For the Three Months Ended March 31, 2017 One- to Four-Family Correspondent Bulk Commercial Originated Purchased Purchased Total Real Estate Consumer Total (Dollars in thousands) Beginning balance $ 3,743 $ 2,064 $ 1,012 $ 6,819 $ 1,495 $ 207 $ 8,521 Charge-offs (17 ) — (48 ) (65 ) — (17 ) (82 ) Recoveries — — — — — 8 8 Provision for credit losses (375 ) (124 ) 36 (463 ) 390 73 — Ending balance $ 3,351 $ 1,940 $ 1,000 $ 6,291 $ 1,885 $ 271 $ 8,447 For the Six Months Ended March 31, 2017 One- to Four-Family Correspondent Bulk Commercial Originated Purchased Purchased Total Real Estate Consumer Total (Dollars in thousands) Beginning balance $ 3,928 $ 2,102 $ 1,065 $ 7,095 $ 1,208 $ 237 $ 8,540 Charge-offs (41 ) — (48 ) (89 ) — (25 ) (114 ) Recoveries — — — — — 21 21 Provision for credit losses (536 ) (162 ) (17 ) (715 ) 677 38 — Ending balance $ 3,351 $ 1,940 $ 1,000 $ 6,291 $ 1,885 $ 271 $ 8,447 For the Three Months Ended March 31, 2016 One- to Four-Family Correspondent Bulk Commercial Originated Purchased Purchased Total Real Estate Consumer Total (Dollars in thousands) Beginning balance $ 4,812 $ 2,020 $ 1,290 $ 8,122 $ 801 $ 278 $ 9,201 Charge-offs (17 ) — (38 ) (55 ) — (20 ) (75 ) Recoveries 39 — 18 57 — 10 67 Provision for credit losses (258 ) 243 (27 ) (42 ) 36 6 — Ending balance $ 4,576 $ 2,263 $ 1,243 $ 8,082 $ 837 $ 274 $ 9,193 For the Six Months Ended March 31, 2016 One- to Four-Family Correspondent Bulk Commercial Originated Purchased Purchased Total Real Estate Consumer Total (Dollars in thousands) Beginning balance $ 4,865 $ 2,115 $ 1,434 $ 8,414 $ 742 $ 287 $ 9,443 Charge-offs (74 ) — (213 ) (287 ) — (38 ) (325 ) Recoveries 42 — 18 60 — 15 75 Provision for credit losses (257 ) 148 4 (105 ) 95 10 — Ending balance $ 4,576 $ 2,263 $ 1,243 $ 8,082 $ 837 $ 274 $ 9,193 The following is a summary of the loan portfolio and related ACL balances, at the dates presented, by loan portfolio segment disaggregated by the Company's impairment method. There was no ACL for loans individually evaluated for impairment at either date as all losses were charged-off. March 31, 2017 One- to Four-Family Correspondent Bulk Commercial Originated Purchased Purchased Total Real Estate Consumer Total (Dollars in thousands) Recorded investment in loans collectively evaluated for impairment $ 4,015,889 $ 2,426,776 $ 376,595 $ 6,819,260 $ 218,200 $ 122,613 $ 7,160,073 Recorded investment in loans individually evaluated for impairment 25,887 3,842 11,076 40,805 — 1,290 42,095 $ 4,041,776 $ 2,430,618 $ 387,671 $ 6,860,065 $ 218,200 $ 123,903 $ 7,202,168 ACL for loans collectively evaluated for impairment $ 3,351 $ 1,940 $ 1,000 $ 6,291 $ 1,885 $ 271 $ 8,447 September 30, 2016 One- to Four-Family Correspondent Bulk Commercial Originated Purchased Purchased Total Real Estate Consumer Total (Dollars in thousands) Recorded investment in loans collectively evaluated for impairment $ 4,003,750 $ 2,233,347 $ 407,833 $ 6,644,930 $ 153,082 $ 126,504 $ 6,924,516 Recorded investment in loans individually evaluated for impairment 24,960 4,975 11,008 40,943 — 1,105 42,048 $ 4,028,710 $ 2,238,322 $ 418,841 $ 6,685,873 $ 153,082 $ 127,609 $ 6,966,564 ACL for loans collectively evaluated for impairment $ 3,928 $ 2,102 $ 1,065 $ 7,095 $ 1,208 $ 237 $ 8,540

Low Income Housing Partnerships

Low Income Housing Partnerships	6 Months Ended
	Mar. 31, 2017
Investments in Affordable Housing Projects [Abstract]
Low Income Housing Partnerships	LOW INCOME HOUSING PARTNERSHIPS The Bank's investment in low income housing partnerships, which is included in other assets in the consolidated balance sheets, was $55.8 million and $58.0 million at March 31, 2017 and September 30, 2016 , respectively. The Bank's obligations related to unfunded commitments, which are included in accounts payable and accrued expenses in the consolidated balance sheets, were $24.5 million and $27.2 million at March 31, 2017 and September 30, 2016 , respectively. The majority of the commitments at March 31, 2017 are projected to be funded through the end of calendar year 2019 . For the six months ended March 31, 2017, the net income tax benefit associated with these investments, which consists of proportional amortization expense and affordable housing tax credits and other related tax benefits, was reported in income tax expense in the consolidated statements of income. The amount of proportional amortization expense during the three and six months ended March 31, 2017 was $1.1 million and $2.2 million , respectively, and the amount of affordable housing tax credits and other related tax benefits was $1.8 million and $3.5 million , respectively, resulting in a net income tax benefit of $729 thousand and $1.3 million , respectively. For the three and six months ended March 31, 2016 , the expenses were reported in the low income housing partnerships line of the consolidated statements of income, and the amount of affordable housing tax credits and other related tax benefits was $1.7 million and $3.2 million , respectively. There were no impairment losses during the six months ended March 31, 2017 and 2016 resulting from the forfeiture or ineligibility of tax credits or other circumstances.

Repurchase Agreements

Repurchase Agreements	6 Months Ended
	Mar. 31, 2017
Disclosure of Repurchase Agreements [Abstract]
Repurchase Agreements	REPURCHASE AGREEMENTS At both March 31, 2017 and September 30, 2016 , the Company had repurchase agreements outstanding in the amount of $200.0 million with a weighted average contractual rate of 2.94% . All of the Company's repurchase agreements at March 31, 2017 and September 30, 2016 were fixed-rate. See Note 3 for information regarding the amount of securities pledged as collateral in conjunction with repurchase agreements. Securities are delivered to the party with whom each transaction is executed and the party agrees to resell the same securities to the Bank at the maturity of the agreement. The Bank retains the right to substitute similar or like securities throughout the terms of the agreements. The repurchase agreements and collateral are subject to valuation at current market levels and the Bank may ask for the return of excess collateral or be required to post additional collateral due to changes in the market values of these items. The Bank may also be required to post additional collateral as a result of principal payments received on the securities pledged. The following table presents the scheduled maturity of repurchase agreements by fiscal year as of March 31, 2017 : Amount (Dollars in thousands) 2017 $ — 2018 100,000 2019 — 2020 100,000 2021 — Thereafter — $ 200,000

Fair Value Of Financial Instrum

Fair Value Of Financial Instruments	6 Months Ended
	Mar. 31, 2017
Fair Value Disclosures [Abstract]
Fair Value Of Financial Instruments	FAIR VALUE OF FINANCIAL INSTRUMENTS Fair Value Measurements - The Company uses fair value measurements to record fair value adjustments to certain assets and to determine fair value disclosures in accordance with Accounting Standards Codification ("ASC") 820 and ASC 825. The Company did not have any liabilities that were measured at fair value at March 31, 2017 or September 30, 2016 . The Company's AFS securities are recorded at fair value on a recurring basis. Additionally, from time to time, the Company may be required to record at fair value other assets or liabilities on a non-recurring basis, such as OREO and loans individually evaluated for impairment. These non-recurring fair value adjustments involve the application of lower of cost or fair value accounting or write-downs of individual assets. The Company groups its assets at fair value in three levels based on the markets in which the assets are traded and the reliability of the assumptions used to determine fair value. These levels are: • Level 1 - Valuation is based upon quoted prices for identical instruments traded in active markets. • Level 2 - Valuation is based upon quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are not active, and model-based valuation techniques for which all significant assumptions are observable in the market. • Level 3 - Valuation is generated from model-based techniques that use significant assumptions not observable in the market. These unobservable assumptions reflect the Company's own estimates of assumptions that market participants would use in pricing the asset or liability. Valuation techniques include the use of option pricing models, discounted cash flow models, and similar techniques. The results cannot be determined with precision and may not be realized in an actual sale or immediate settlement of the asset or liability. The Company bases its fair values on the price that would be received from the sale of an asset in an orderly transaction between market participants at the measurement date under current market conditions. The Company maximizes the use of observable inputs and minimizes the use of unobservable inputs when measuring fair value. The following is a description of valuation methodologies used for assets measured at fair value on a recurring basis. AFS Securities - The Company's AFS securities portfolio is carried at estimated fair value, with any unrealized gains and losses, net of taxes, reported as AOCI in stockholders' equity. The majority of the securities within the AFS portfolio were issued by GSEs. The Company primarily uses prices obtained from third party pricing services to determine the fair value of its securities. On a quarterly basis, management corroborates a sample of prices obtained from the third party pricing service for Level 2 securities by comparing them to an independent source. If the price provided by the independent source varies by more than a predetermined percentage from the price received from the third party pricing service, then the variance is researched by management. The Company did not have to adjust prices obtained from the third party pricing service when determining the fair value of its securities during the six months ended March 31, 2017 or during fiscal year 2016. The Company's major security types, based on the nature and risks of the securities, are: • GSE Debentures - Estimated fair values are based on a discounted cash flow method. Cash flows are determined by taking any embedded options into consideration and are discounted using current market yields for similar securities. (Level 2) • MBS - Estimated fair values are based on a discounted cash flow method. Cash flows are determined based on prepayment projections of the underlying mortgages and are discounted using current market yields for benchmark securities. (Level 2) • Municipal Bonds - Estimated fair values are based on a discounted cash flow method. Cash flows are determined by taking any embedded options into consideration and are discounted using current market yields for securities with similar credit profiles. (Level 2) • Trust Preferred Securities - Estimated fair values are based on a discounted cash flow method. Cash flows are determined by taking prepayment and underlying credit considerations into account. The discount rates are derived from secondary trades and bid/offer prices. (Level 3) The following tables provide the level of valuation assumption used to determine the carrying value of the Company's assets measured at fair value on a recurring basis at the dates presented. March 31, 2017 Quoted Prices Significant Significant in Active Markets Other Observable Unobservable Carrying for Identical Assets Inputs Inputs Value (Level 1) (Level 2) (Level 3) (Dollars in thousands) AFS Securities: GSE debentures $ 295,588 $ — $ 295,588 $ — MBS 166,051 — 166,051 — Municipal bonds 1,530 — 1,530 — Trust preferred securities 1,914 — — 1,914 $ 465,083 $ — $ 463,169 $ 1,914 September 30, 2016 Quoted Prices Significant Significant in Active Markets Other Observable Unobservable Carrying for Identical Assets Inputs Inputs Value (Level 1) (Level 2) (Level 3) (Dollars in thousands) AFS Securities: GSE debentures $ 347,038 $ — $ 347,038 $ — MBS 178,507 — 178,507 — Municipal bonds — — — — Trust preferred securities 1,756 — — 1,756 $ 527,301 $ — $ 525,545 $ 1,756 The Company's Level 3 AFS securities had no activity during the three and six months ended March 31, 2017 , except for principal repayments of $43 thousand and $62 thousand , respectively, and decreases in net unrealized losses included in other comprehensive income of $45 thousand and $125 thousand , respectively. The Company's Level 3 AFS securities had no activity during the three and six months ended March 31, 2016 , except for principal repayments of $26 thousand and $31 thousand , respectively, and increases in net unrealized losses included in other comprehensive income of $29 thousand and $68 thousand , respectively. The following is a description of valuation methodologies used for significant assets measured at fair value on a non-recurring basis. Loans Receivable - The balance of loans individually evaluated for impairment at March 31, 2017 and September 30, 2016 was $42.1 million and $42.0 million , respectively. Substantially all of these loans were secured by residential real estate and were individually evaluated to determine if the carrying value of the loan was in excess of the fair value of the collateral, less estimated selling costs of 10% . When no impairment is indicated, the carrying amount is considered to approximate fair value. Fair values were estimated through current appraisals or current Federal Housing Finance Agency ("FHFA") housing price indices, which is a broad based measure of the movement of single-family house prices and is a weighted, repeat-sales index. Management does not adjust or apply a discount to the appraised value or FHFA housing price indices, except for the estimated sales costs noted above. The primary significant unobservable input for loans individually evaluated for impairment using appraisals to determine the estimated fair value was the appraisal. Fair values of loans individually evaluated for impairment cannot be determined with precision and may not be realized in an actual sale or immediate settlement of the loan, and, as such are classified as Level 3. Based on this evaluation, the Bank charged-off all loss amounts as of March 31, 2017 and September 30, 2016 ; therefore, there was no ACL related to these loans. OREO - OREO primarily represents real estate acquired as a result of foreclosure or by deed in lieu of foreclosure and is carried at lower of cost or fair value. Fair value is estimated through current appraisals or listing prices, less estimated selling costs of 10% . Management does not adjust or apply a discount to the appraised value or listing price, except for the estimated sales costs noted above. The primary significant unobservable input for OREO was the appraisal or listing price. Fair values of foreclosed property cannot be determined with precision and may not be realized in an actual sale of the property and, as such, are classified as Level 3. The fair value of OREO at March 31, 2017 and September 30, 2016 was $2.7 million and $3.7 million , respectively. The following tables provide the level of valuation assumptions used to determine the carrying value of the Company's assets measured at fair value on a non-recurring basis at the dates presented. March 31, 2017 Quoted Prices Significant Significant in Active Markets Other Observable Unobservable Carrying for Identical Assets Inputs Inputs Value (Level 1) (Level 2) (Level 3) (Dollars in thousands) Loans individually evaluated for impairment $ 42,075 $ — $ — $ 42,075 OREO 2,661 — — 2,661 $ 44,736 $ — $ — $ 44,736 September 30, 2016 Quoted Prices Significant Significant in Active Markets Other Observable Unobservable Carrying for Identical Assets Inputs Inputs Value (Level 1) (Level 2) (Level 3) (Dollars in thousands) Loans individually evaluated for impairment $ 41,995 $ — $ — $ 41,995 OREO 3,734 — — 3,734 $ 45,729 $ — $ — $ 45,729 Fair Value Disclosures - The Company determined estimated fair value amounts using available market information and a variety of valuation methodologies as of the dates presented. Considerable judgment is required to interpret market data to develop the estimates of fair value. The estimates presented are not necessarily indicative of amounts the Company would realize from a current market exchange at subsequent dates. The carrying amounts and estimated fair values of the Company's financial instruments, at the dates presented, were as follows: March 31, 2017 September 30, 2016 Estimated Estimated Carrying Fair Carrying Fair Amount Value Amount Value (Dollars in thousands) Assets: Cash and cash equivalents $ 240,587 $ 240,587 $ 281,764 $ 281,764 AFS securities 465,083 465,083 527,301 527,301 HTM securities 954,110 959,541 1,100,874 1,122,867 Loans receivable 7,193,721 7,310,421 6,958,024 7,292,971 FHLB stock 105,475 105,475 109,970 109,970 Liabilities: Deposits 5,269,234 5,278,715 5,164,018 5,204,251 FHLB borrowings 2,273,113 2,289,036 2,372,389 2,434,151 Repurchase agreements 200,000 202,952 200,000 207,303 The following methods and assumptions were used to estimate the fair value of the financial instruments: Cash and Cash Equivalents - The carrying amounts of cash and cash equivalents are considered to approximate their fair value due to the nature of the financial assets. (Level 1) HTM Securities - Estimated fair values of securities are based on one of three methods: (1) quoted market prices where available; (2) quoted market prices for similar instruments if quoted market prices are not available; (3) unobservable data that represents the Bank's assumptions about items that market participants would consider in determining fair value where no market data is available. HTM securities are carried at amortized cost. (Level 2) Loans Receivable - The fair value of one- to four-family loans and home equity loans are generally estimated using the present value of expected future cash flows, assuming future prepayments and using discount factors determined by prices obtained from securitization markets, less a discount for the cost of servicing and lack of liquidity. The estimated fair value of the Bank's commercial and consumer loans are based on the expected future cash flows assuming future prepayments and discount factors based on current offering rates. (Level 3) FHLB stock - The carrying value and estimated fair value of FHLB stock equals cost, which is based on redemption at par value. (Level 1) Deposits - The estimated fair value of demand deposits, savings, and money market accounts is the amount payable on demand at the reporting date. The estimated fair value of these deposits at March 31, 2017 and September 30, 2016 was $2.46 billion and $2.34 billion , respectively. (Level 1) The fair value of certificates of deposit is estimated by discounting future cash flows using current London Interbank Offered Rates ("LIBOR"). The estimated fair value of certificates of deposit at March 31, 2017 and September 30, 2016 was $2.82 billion and $2.87 billion , respectively. (Level 2) FHLB borrowings and Repurchase Agreements - The fair value of fixed-maturity borrowed funds is estimated by discounting estimated future cash flows using current offer rates. (Level 2)

Summary Of Significant Accoun17

Summary Of Significant Accounting Policies (Policies)	6 Months Ended
	Mar. 31, 2017
Accounting Policies [Abstract]
Basis of Presentation	The consolidated financial statements include the accounts of Capitol Federal® Financial, Inc. (the "Company") and its wholly-owned subsidiary, Capitol Federal Savings Bank (the "Bank"). The Bank has a wholly-owned subsidiary, Capitol Funds, Inc. Capitol Funds, Inc. has a wholly-owned subsidiary, Capitol Federal Mortgage Reinsurance Company. All intercompany accounts and transactions have been eliminated in consolidation. The consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America ("GAAP") for interim financial information and with the instructions to Form 10-Q and Rule 10-01 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by GAAP for complete financial statements. In the opinion of management, all adjustments (consisting of normal recurring adjustments) considered necessary for a fair presentation have been included. These statements should be read in conjunction with the consolidated financial statements and notes thereto included in the Company's Annual Report on Form 10-K for the fiscal year ended September 30, 2016 , filed with the Securities and Exchange Commission ("SEC"). Interim results are not necessarily indicative of results for a full year.
Net Presentation of Cash Flows Related to Borrowings	Beginning in fiscal year 2014, the Bank implemented a leverage strategy ("leverage strategy") to increase earnings. This leverage strategy involves borrowing up to $2.10 billion either on the Bank's FHLB line of credit or by entering into short-term FHLB advances, depending on the rates offered by the FHLB at the time of the borrowings, with some or all of the balance being repaid prior to the end of each quarter for regulatory purposes. Proceeds from the borrowings, net of required FHLB stock holdings, are deposited at the Federal Reserve Bank of Kansas City (the "FRB of Kansas City"). The contractual maturities of the FHLB advances utilized in conjunction with the leverage strategy beginning in the current fiscal year are seven days or less; therefore, cash flows related to these advances are reported on a net basis within the consolidated statements of cash flows.
Low Income Housing Partnerships	As part of the Bank's community reinvestment initiatives, the Bank invests in affordable housing limited partnerships ("low income housing partnerships") that make equity investments in affordable housing properties. The Bank is a limited partner in each partnership in which it invests. A separate, unrelated third party is the general partner. The Bank receives affordable housing tax credits and other tax benefits for these investments. Prior to October 1, 2016, the Bank accounted for its low income housing partnership investments using the equity method of accounting, as two of the Bank's officers were involved in the operational management of the low income housing partnership investment group. On October 1, 2016, due to both officers' resignation from operational management, the Bank began using the proportional method of accounting for its low income housing partnership investments.
Recent Accounting Pronouncements	In May 2014, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2014-09, Revenue from Contracts with Customers . The ASU, as amended, clarifies principles for recognizing revenue and provides a common revenue standard for GAAP and International Financial Reporting Standards. Additionally, the ASU provides implementation guidance on several topics and requires entities to disclose both quantitative and qualitative information regarding contracts with customers. ASU 2014-09 will become effective for the Company on October 1, 2018. The scope of the amended ASU explicitly excludes interest income from loans and securities; therefore, the Company anticipates that the majority of its revenue will not be within the scope of the amended ASU. The Company is continuing to evaluate the amended ASU and its impact on the Company's consolidated financial condition, results of operations, and disclosures. In January 2016, the FASB issued ASU 2016-01, Financial Instruments, Recognition and Measurement of Financial Assets and Liabilities . The ASU supersedes certain accounting guidance related to equity securities with readily determinable fair values and the related impairment assessment. An entity's equity investments that are accounted for under the equity method of accounting or result in consolidation of an investee are not included within the scope of this ASU. The ASU requires public business entities to utilize the exit price notation in determining fair value for financial instruments measured at amortized cost on the balance sheet. The ASU requires additional reporting in other comprehensive income for financial liabilities measured at fair value in accordance with the fair value option. The ASU also requires separate presentation of financial assets and financial liabilities by measurement category and form of financial asset on the balances or in the notes to the financial statements. ASU 2016-01 will become effective for the Company on October 1, 2018. Early adoption is not permitted except in certain circumstances. The Company is currently evaluating the impact that this ASU may have on the Company's consolidated financial condition, results of operations and disclosures. In February 2016, the FASB issued ASU 2016-02, Leases . The ASU amends lease accounting guidance by requiring that lessees recognize the assets and liabilities arising from leases on the balance sheet. Additionally, the ASU requires entities to disclose both quantitative and qualitative information regarding their leasing activities. ASU 2016-02 will become effective for the Company on October 1, 2019. Early adoption is permitted. The Company is currently in the process of accumulating lease data and developing an inventory of leases. The Company expects to recognize right-of-use assets and lease liabilities for substantially all of its operating lease commitments based on the present value of unpaid lease payments as of the date of adoption. The Company is continuing to evaluate the impact this ASU may have on the Company's consolidated financial condition, results of operations and disclosures. In March 2016, the FASB issued ASU 2016-09, Compensation - Stock Compensation: Improvements to Employee Share-Based Payment Accounting . The ASU simplifies several aspects of the accounting for employee share-based payment transactions, including the accounting for income taxes, forfeitures, and statutory tax withholding requirements, along with simplifying the classification in the statement of cash flows. The ASU will become effective for the Company on October 1, 2017. Upon adoption, the Company intends to elect to account for forfeitures of stock-based compensation awards when they occur. The Company plans to recognize excess tax benefits and tax deficiencies in income tax expense on the consolidated statements of income and present them within operating activities on the consolidated statements of cash flows. While the adoption of the ASU is not expected to have a material impact on the Company's consolidated financial condition or results of operations, the impact of tax benefits and the timing of their recognition within income tax expense is unpredictable, as these benefits are recognized primarily as a result of stock options being exercised. In June 2016, the FASB issued ASU 2016-13, Financial Instruments - Credit Losses: Measurement of Credit Losses on Financial Instruments . The ASU replaces the incurred loss impairment methodology in current GAAP, which requires credit losses to be recognized when it is probable that a loss has incurred, with a new impairment methodology. The new impairment methodology requires an entity to measure, at each reporting date, the expected credit losses of financial assets not measured at fair value, such as loans, HTM debt securities, and loan commitments, over their contractual lives. Under the new impairment methodology, expected credit losses will be measured at each reporting date based on historical experience, current conditions, and reasonable and supportable forecasts. Additionally, the ASU amends the current credit loss measurements for AFS debt securities. Credit losses related to AFS debt securities will be recorded through the ACL rather than as a direct write-down as per current GAAP. The ASU also requires enhanced disclosures related to credit quality and significant estimates and judgments used by management when estimating credit losses. The ASU will become effective for the Company on October 1, 2020. Early adoption is permitted for fiscal years beginning after December 15, 2018. The Company is currently evaluating the ASU and is in the process of reviewing its systems and processes to support the data required to implement the ASU. In March 2017, the FASB issued ASU 2017-08, Premium Amortization on Purchased Callable Debt Securities . The amendments in this ASU shorten the amortization period for certain callable debt securities held at a premium. Specifically, the amendments require the premium to be amortized to the earliest call date. Under current GAAP, premiums on callable debt securities generally are amortized to the maturity date. The ASU will become effective for the Company on October 1, 2019. Early adoption is permitted, including adoption in an interim period. The Company is evaluating the ASU, but the ASU is not expected to have a material impact on the Company's consolidated financial condition or results of operations.

Earnings Per Share (Tables)

Earnings Per Share (Tables)	6 Months Ended
	Mar. 31, 2017
Earnings Per Share [Abstract]
Schedule Of Earnings Per Share, Basic And Diluted	Shares acquired by the ESOP are not considered in the basic average shares outstanding until the shares are committed for allocation or vested to an employee's individual account. Unvested shares awarded pursuant to the Company's restricted stock benefit plans are treated as participating securities in the computation of EPS pursuant to the two-class method as they contain nonforfeitable rights to dividends. The two-class method is an earnings allocation that determines EPS for each class of common stock and participating security. For the Three Months Ended For the Six Months Ended March 31, March 31, 2017 2016 2017 2016 (Dollars in thousands, except per share amounts) Net income $ 21,587 $ 21,527 $ 42,165 $ 42,245 Income allocated to participating securities (12 ) (16 ) (25 ) (43 ) Net income available to common stockholders $ 21,575 $ 21,511 $ 42,140 $ 42,202 Average common shares outstanding 134,024,890 132,918,277 133,858,701 132,869,793 Average committed ESOP shares outstanding 41,299 41,753 20,649 20,988 Total basic average common shares outstanding 134,066,189 132,960,030 133,879,350 132,890,781 Effect of dilutive stock options 192,633 71,012 223,097 80,473 Total diluted average common shares outstanding 134,258,822 133,031,042 134,102,447 132,971,254 Net EPS: Basic $ 0.16 $ 0.16 $ 0.31 $ 0.32 Diluted $ 0.16 $ 0.16 $ 0.31 $ 0.32 Antidilutive stock options, excluded from the diluted average common shares outstanding calculation 187,327 921,199 212,133 898,386

Securities (Tables)

Securities (Tables)	6 Months Ended
	Mar. 31, 2017
Marketable Securities [Abstract]
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"). March 31, 2017 Gross Gross Estimated Amortized Unrealized Unrealized Fair Cost Gains Losses Value (Dollars in thousands) AFS: GSE debentures $ 296,266 $ 63 $ 741 $ 295,588 MBS 158,414 7,676 39 166,051 Trust preferred securities 2,080 — 166 1,914 Municipal bonds 1,535 — 5 1,530 $ 458,295 $ 7,739 $ 951 $ 465,083 HTM: MBS $ 924,819 $ 11,845 $ 6,456 $ 930,208 Municipal bonds 29,291 101 59 29,333 $ 954,110 $ 11,946 $ 6,515 $ 959,541 September 30, 2016 Gross Gross Estimated Amortized Unrealized Unrealized Fair Cost Gains Losses Value (Dollars in thousands) AFS: GSE debentures $ 346,226 $ 815 $ 3 $ 347,038 MBS 169,442 9,069 4 178,507 Trust preferred securities 2,123 — 367 1,756 $ 517,791 $ 9,884 $ 374 $ 527,301 HTM: MBS $ 1,067,571 $ 22,862 $ 1,219 $ 1,089,214 Municipal bonds 33,303 357 7 33,653 $ 1,100,874 $ 23,219 $ 1,226 $ 1,122,867
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"). March 31, 2017 Gross Gross Estimated Amortized Unrealized Unrealized Fair Cost Gains Losses Value (Dollars in thousands) AFS: GSE debentures $ 296,266 $ 63 $ 741 $ 295,588 MBS 158,414 7,676 39 166,051 Trust preferred securities 2,080 — 166 1,914 Municipal bonds 1,535 — 5 1,530 $ 458,295 $ 7,739 $ 951 $ 465,083 HTM: MBS $ 924,819 $ 11,845 $ 6,456 $ 930,208 Municipal bonds 29,291 101 59 29,333 $ 954,110 $ 11,946 $ 6,515 $ 959,541 September 30, 2016 Gross Gross Estimated Amortized Unrealized Unrealized Fair Cost Gains Losses Value (Dollars in thousands) AFS: GSE debentures $ 346,226 $ 815 $ 3 $ 347,038 MBS 169,442 9,069 4 178,507 Trust preferred securities 2,123 — 367 1,756 $ 517,791 $ 9,884 $ 374 $ 527,301 HTM: MBS $ 1,067,571 $ 22,862 $ 1,219 $ 1,089,214 Municipal bonds 33,303 357 7 33,653 $ 1,100,874 $ 23,219 $ 1,226 $ 1,122,867
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. March 31, 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 $ 199,231 $ 741 $ — $ — MBS 10,628 34 629 5 Trust preferred securities — — 1,914 166 Municipal bonds 1,530 5 — — $ 211,389 $ 780 $ 2,543 $ 171 HTM: MBS $ 448,666 $ 4,533 $ 85,249 $ 1,923 Municipal bonds 9,062 57 447 2 $ 457,728 $ 4,590 $ 85,696 $ 1,925 September 30, 2016 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 $ 24,997 $ 3 $ — $ — MBS — — 654 4 Trust preferred securities — — 1,756 367 $ 24,997 $ 3 $ 2,410 $ 371 HTM: MBS $ 147,930 $ 538 $ 66,646 $ 681 Municipal bonds 4,771 6 391 1 $ 152,701 $ 544 $ 67,037 $ 682
Schedule Of Contractual Maturities	The amortized cost and estimated fair value of debt securities as of March 31, 2017 , 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 $ 75,020 $ 75,020 $ 6,105 $ 6,142 One year through five years 222,781 222,098 20,997 20,986 Five years through ten years — — 2,189 2,205 Ten years and thereafter 2,080 1,914 — — 299,881 299,032 29,291 29,333 MBS 158,414 166,051 924,819 930,208 $ 458,295 $ 465,083 $ 954,110 $ 959,541
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 Six Months Ended March 31, March 31, 2017 2016 2017 2016 (Dollars in thousands) Taxable $ 1,000 $ 1,314 $ 1,964 $ 2,668 Non-taxable 131 171 274 350 $ 1,131 $ 1,485 $ 2,238 $ 3,018
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. March 31, 2017 September 30, 2016 (Dollars in thousands) Public unit deposits $ 394,335 $ 419,282 Repurchase agreements 214,773 217,374 FRB of Kansas City 13,686 15,938 $ 622,794 $ 652,594

Loans Receivable And Allowanc20

Loans Receivable And Allowance For Credit Losses (Tables)	6 Months Ended
	Mar. 31, 2017
Loans and Leases Receivable Disclosure [Abstract]
Summary of Loans Receivable	Loans receivable, net at the dates presented is summarized as follows: March 31, 2017 September 30, 2016 (Dollars in thousands) Real estate loans: One- to four-family: Originated $ 4,025,985 $ 4,005,615 Correspondent purchased 2,396,663 2,206,072 Bulk purchased 385,700 416,653 Construction 30,818 39,430 Total 6,839,166 6,667,770 Commercial: Permanent 102,806 110,768 Construction 116,471 43,375 Total 219,277 154,143 Total real estate loans 7,058,443 6,821,913 Consumer loans: Home equity 119,434 123,345 Other 4,469 4,264 Total consumer loans 123,903 127,609 Total loans receivable 7,182,346 6,949,522 Less: ACL 8,447 8,540 Discounts/unearned loan fees 25,318 24,933 Premiums/deferred costs (45,140 ) (41,975 ) $ 7,193,721 $ 6,958,024
Recorded Investment in Loans, Past Due	The following tables present the recorded investment, by class, in loans 30 to 89 days delinquent, loans 90 or more days delinquent or in foreclosure, total delinquent loans, current loans, and total recorded investment at the dates presented. The recorded investment in loans is defined as the unpaid principal balance of a loan, less charge-offs and inclusive of unearned loan fees and deferred costs. At March 31, 2017 and September 30, 2016 , all loans 90 or more days delinquent were on nonaccrual status. March 31, 2017 90 or More Days Total Total 30 to 89 Days Delinquent or Delinquent Current Recorded Delinquent in Foreclosure Loans Loans Investment (Dollars in thousands) One- to four-family - originated $ 10,853 $ 5,333 $ 16,186 $ 4,025,590 $ 4,041,776 One- to four-family - correspondent 749 908 1,657 2,428,961 2,430,618 One- to four-family - bulk purchased 3,556 7,178 10,734 376,937 387,671 Commercial real estate — — — 218,200 218,200 Consumer - home equity 761 423 1,184 118,250 119,434 Consumer - other 34 7 41 4,428 4,469 $ 15,953 $ 13,849 $ 29,802 $ 7,172,366 $ 7,202,168 September 30, 2016 90 or More Days Total Total 30 to 89 Days Delinquent or Delinquent Current Recorded Delinquent in Foreclosure Loans Loans Investment (Dollars in thousands) One- to four-family - originated $ 13,545 $ 8,153 $ 21,698 $ 4,007,012 $ 4,028,710 One- to four-family - correspondent 3,389 992 4,381 2,233,941 2,238,322 One- to four-family - bulk purchased 5,082 7,380 12,462 406,379 418,841 Commercial real estate — — — 153,082 153,082 Consumer - home equity 635 520 1,155 122,190 123,345 Consumer - other 62 9 71 4,193 4,264 $ 22,713 $ 17,054 $ 39,767 $ 6,926,797 $ 6,966,564
Recorded Investment in Loans, Nonaccrual	The following table presents the recorded investment, by class, in loans classified as nonaccrual at the dates presented. March 31, 2017 September 30, 2016 (Dollars in thousands) One- to four-family - originated $ 15,974 $ 17,086 One- to four-family - correspondent 1,497 3,788 One- to four-family - bulk purchased 7,991 7,411 Commercial real estate — — Consumer - home equity 770 848 Consumer - other 7 10 $ 26,239 $ 29,143
Recorded Investment in Classified Loans	The following table sets forth the recorded investment in loans classified as special mention or substandard, by class, at the dates presented. Special mention and substandard loans are included in the ACL formula analysis model if the loans are not individually evaluated for loss. Loans classified as doubtful or loss are individually evaluated for loss. At the dates presented, there were no loans classified as doubtful, and all loans classified as loss were fully charged-off. March 31, 2017 September 30, 2016 Special Mention Substandard Special Mention Substandard (Dollars in thousands) One- to four-family - originated $ 9,081 $ 29,167 $ 10,242 $ 27,818 One- to four-family - correspondent 365 5,269 2,496 5,168 One- to four-family - bulk purchased 867 11,069 1,156 11,480 Commercial real estate — — — — Consumer - home equity 41 1,463 54 1,431 Consumer - other — 17 8 16 $ 10,354 $ 46,985 $ 13,956 $ 45,913
Weighted Average Loan-to-Value and Credit Score Information	The following table shows the weighted average credit score and weighted average LTV for one- to four-family loans and consumer home equity loans at the dates presented. Borrower credit scores are intended to provide an indication as to the likelihood that a borrower will repay their debts. Credit scores are updated at least semiannually, with the last update in March 2017, from a nationally recognized consumer rating agency. The LTV ratios provide an estimate of the extent to which the Bank may incur a loss on any given loan that may go into foreclosure. The consumer - home equity LTV does not take into account the first lien position, if applicable. The LTV ratios were based on the current loan balance and either the lesser of the purchase price or original appraisal, or the most recent Bank appraisal, if available. In most cases, the most recent appraisal was obtained at the time of origination. March 31, 2017 September 30, 2016 Credit Score LTV Credit Score LTV One- to four-family - originated 767 63 % 766 63 % One- to four-family - correspondent 764 68 764 68 One- to four-family - bulk purchased 754 63 753 64 Consumer - home equity 756 19 755 20 765 64 764 64
Troubled Debt Restructurings on Financing Receivables	The following tables present the recorded investment prior to restructuring and immediately after restructuring in all loans restructured during the periods presented. These tables do not reflect the recorded investment at the end of the periods indicated. Any increase in the recorded investment at the time of the restructuring was generally due to the capitalization of delinquent interest and/or escrow balances. For the Three Months Ended For the Six Months Ended March 31, 2017 March 31, 2017 Number Pre- Post- Number Pre- Post- of Restructured Restructured of Restructured Restructured Contracts Outstanding Outstanding Contracts Outstanding Outstanding (Dollars in thousands) One- to four-family - originated 43 $ 5,360 $ 5,492 81 $ 9,288 $ 9,677 One- to four-family - correspondent 3 260 261 3 260 261 One- to four-family - purchased 2 687 700 2 687 700 Commercial real estate — — — — — — Consumer - home equity 6 111 115 14 317 327 Consumer - other — — — — — — 54 $ 6,418 $ 6,568 100 $ 10,552 $ 10,965 For the Three Months Ended For the Six Months Ended March 31, 2016 March 31, 2016 Number Pre- Post- Number Pre- Post- of Restructured Restructured of Restructured Restructured Contracts Outstanding Outstanding Contracts Outstanding Outstanding (Dollars in thousands) One- to four-family - originated 28 $ 3,433 $ 3,542 58 $ 6,539 $ 6,707 One- to four-family - correspondent 4 826 833 4 826 833 One- to four-family - bulk purchased — — — 1 123 122 Commercial real estate — — — — — — Consumer - home equity 1 3 3 5 64 64 Consumer - other 1 8 8 1 8 8 34 $ 4,270 $ 4,386 69 $ 7,560 $ 7,734 The following table provides information on TDRs that became delinquent during the periods presented within 12 months after being restructured. For the Three Months Ended For the Six Months Ended March 31, 2017 March 31, 2016 March 31, 2017 March 31, 2016 Number of Recorded Number of Recorded Number of Recorded Number of Recorded Contracts Investment Contracts Investment Contracts Investment Contracts Investment (Dollars in thousands) One- to four-family - originated 11 $ 1,069 16 $ 1,802 22 $ 2,047 27 $ 2,602 One- to four-family - correspondent — — — — — — — — One- to four-family - bulk purchased — — — — — — — — Commercial real estate — — — — — — — — Consumer - home equity 5 224 2 13 9 339 4 91 Consumer - other — — — — — — — — 16 $ 1,293 18 $ 1,815 31 $ 2,386 31 $ 2,693
Impaired Loans by Class	The following information pertains to impaired loans, by class, as of the dates presented. A loan is considered impaired when, based on current information and events, it is probable that the Bank will be unable to collect all amounts due, including principal and interest, according to the contractual terms of the loan agreement. March 31, 2017 September 30, 2016 Unpaid Unpaid Recorded Principal Related Recorded Principal Related Investment Balance ACL Investment Balance ACL (Dollars in thousands) With no related allowance recorded One- to four-family - originated $ 24,560 $ 25,243 $ — $ 22,982 $ 23,640 $ — One- to four-family - correspondent 3,841 3,828 — 2,963 2,950 — One- to four-family - bulk purchased 10,821 12,388 — 10,985 12,684 — Commercial real estate — — — — — — Consumer - home equity 1,164 1,372 — 1,014 1,230 — Consumer - other 5 26 — 10 42 — 40,391 42,857 — 37,954 40,546 — With an allowance recorded One- to four-family - originated 12,381 12,415 72 13,430 13,476 125 One- to four-family - correspondent 1,993 1,991 7 2,662 2,664 4 One- to four-family - bulk purchased 1,279 1,249 19 1,650 1,627 49 Commercial real estate — — — — — — Consumer - home equity 394 394 17 548 548 38 Consumer - other 13 13 2 6 6 1 16,060 16,062 117 18,296 18,321 217 Total One- to four-family - originated 36,941 37,658 72 36,412 37,116 125 One- to four-family - correspondent 5,834 5,819 7 5,625 5,614 4 One- to four-family - bulk purchased 12,100 13,637 19 12,635 14,311 49 Commercial real estate — — — — — — Consumer - home equity 1,558 1,766 17 1,562 1,778 38 Consumer - other 18 39 2 16 48 1 $ 56,451 $ 58,919 $ 117 $ 56,250 $ 58,867 $ 217 The following information pertains to impaired loans, by class, for the periods presented. For the Three Months Ended For the Six Months Ended March 31, 2017 March 31, 2016 March 31, 2017 March 31, 2016 Average Interest Average Interest Average Interest Average Interest Recorded Income Recorded Income Recorded Income Recorded Income Investment Recognized Investment Recognized Investment Recognized Investment Recognized (Dollars in thousands) With no related allowance recorded One- to four-family - originated $ 23,825 $ 218 $ 11,381 $ 119 $ 23,139 $ 423 $ 11,059 $ 229 One- to four-family - correspondent 4,045 35 203 3 3,498 59 165 6 One- to four-family - bulk purchased 10,877 49 11,637 49 10,846 95 11,218 100 Commercial real estate — — — — — — — — Consumer - home equity 1,080 33 636 15 1,030 63 595 23 Consumer - other 10 — 14 — 10 — 12 — 39,837 335 23,871 186 38,523 640 23,049 358 With an allowance recorded One- to four-family - originated 12,145 125 25,437 256 12,859 250 26,089 507 One- to four-family - correspondent 1,477 11 2,216 16 1,982 32 1,783 30 One- to four-family - bulk purchased 1,481 5 1,515 7 1,473 10 2,601 14 Commercial real estate — — — — — — — — Consumer - home equity 505 14 957 15 553 29 963 26 Consumer - other 12 — 17 — 12 — 14 — 15,620 155 30,142 294 16,879 321 31,450 577 Total One- to four-family - originated 35,970 343 36,818 375 35,998 673 37,148 736 One- to four-family - correspondent 5,522 46 2,419 19 5,480 91 1,948 36 One- to four-family - bulk purchased 12,358 54 13,152 56 12,319 105 13,819 114 Commercial real estate — — — — — — — — Consumer - home equity 1,585 47 1,593 30 1,583 92 1,558 49 Consumer - other 22 — 31 — 22 — 26 — $ 55,457 $ 490 $ 54,013 $ 480 $ 55,402 $ 961 $ 54,499 $ 935
Allowance for Credit Losses	The following is a summary of the loan portfolio and related ACL balances, at the dates presented, by loan portfolio segment disaggregated by the Company's impairment method. There was no ACL for loans individually evaluated for impairment at either date as all losses were charged-off. March 31, 2017 One- to Four-Family Correspondent Bulk Commercial Originated Purchased Purchased Total Real Estate Consumer Total (Dollars in thousands) Recorded investment in loans collectively evaluated for impairment $ 4,015,889 $ 2,426,776 $ 376,595 $ 6,819,260 $ 218,200 $ 122,613 $ 7,160,073 Recorded investment in loans individually evaluated for impairment 25,887 3,842 11,076 40,805 — 1,290 42,095 $ 4,041,776 $ 2,430,618 $ 387,671 $ 6,860,065 $ 218,200 $ 123,903 $ 7,202,168 ACL for loans collectively evaluated for impairment $ 3,351 $ 1,940 $ 1,000 $ 6,291 $ 1,885 $ 271 $ 8,447 September 30, 2016 One- to Four-Family Correspondent Bulk Commercial Originated Purchased Purchased Total Real Estate Consumer Total (Dollars in thousands) Recorded investment in loans collectively evaluated for impairment $ 4,003,750 $ 2,233,347 $ 407,833 $ 6,644,930 $ 153,082 $ 126,504 $ 6,924,516 Recorded investment in loans individually evaluated for impairment 24,960 4,975 11,008 40,943 — 1,105 42,048 $ 4,028,710 $ 2,238,322 $ 418,841 $ 6,685,873 $ 153,082 $ 127,609 $ 6,966,564 ACL for loans collectively evaluated for impairment $ 3,928 $ 2,102 $ 1,065 $ 7,095 $ 1,208 $ 237 $ 8,540 The following is a summary of ACL activity, by loan portfolio segment, for the periods presented, and the ending balance of ACL based on the Company's impairment methodology. For the Three Months Ended March 31, 2017 One- to Four-Family Correspondent Bulk Commercial Originated Purchased Purchased Total Real Estate Consumer Total (Dollars in thousands) Beginning balance $ 3,743 $ 2,064 $ 1,012 $ 6,819 $ 1,495 $ 207 $ 8,521 Charge-offs (17 ) — (48 ) (65 ) — (17 ) (82 ) Recoveries — — — — — 8 8 Provision for credit losses (375 ) (124 ) 36 (463 ) 390 73 — Ending balance $ 3,351 $ 1,940 $ 1,000 $ 6,291 $ 1,885 $ 271 $ 8,447 For the Six Months Ended March 31, 2017 One- to Four-Family Correspondent Bulk Commercial Originated Purchased Purchased Total Real Estate Consumer Total (Dollars in thousands) Beginning balance $ 3,928 $ 2,102 $ 1,065 $ 7,095 $ 1,208 $ 237 $ 8,540 Charge-offs (41 ) — (48 ) (89 ) — (25 ) (114 ) Recoveries — — — — — 21 21 Provision for credit losses (536 ) (162 ) (17 ) (715 ) 677 38 — Ending balance $ 3,351 $ 1,940 $ 1,000 $ 6,291 $ 1,885 $ 271 $ 8,447 For the Three Months Ended March 31, 2016 One- to Four-Family Correspondent Bulk Commercial Originated Purchased Purchased Total Real Estate Consumer Total (Dollars in thousands) Beginning balance $ 4,812 $ 2,020 $ 1,290 $ 8,122 $ 801 $ 278 $ 9,201 Charge-offs (17 ) — (38 ) (55 ) — (20 ) (75 ) Recoveries 39 — 18 57 — 10 67 Provision for credit losses (258 ) 243 (27 ) (42 ) 36 6 — Ending balance $ 4,576 $ 2,263 $ 1,243 $ 8,082 $ 837 $ 274 $ 9,193 For the Six Months Ended March 31, 2016 One- to Four-Family Correspondent Bulk Commercial Originated Purchased Purchased Total Real Estate Consumer Total (Dollars in thousands) Beginning balance $ 4,865 $ 2,115 $ 1,434 $ 8,414 $ 742 $ 287 $ 9,443 Charge-offs (74 ) — (213 ) (287 ) — (38 ) (325 ) Recoveries 42 — 18 60 — 15 75 Provision for credit losses (257 ) 148 4 (105 ) 95 10 — Ending balance $ 4,576 $ 2,263 $ 1,243 $ 8,082 $ 837 $ 274 $ 9,193

Repurchase Agreements (Tables)

Repurchase Agreements (Tables)	6 Months Ended
	Mar. 31, 2017
Disclosure of Repurchase Agreements [Abstract]
Maturity of Repurchase Agreements	The following table presents the scheduled maturity of repurchase agreements by fiscal year as of March 31, 2017 : Amount (Dollars in thousands) 2017 $ — 2018 100,000 2019 — 2020 100,000 2021 — Thereafter — $ 200,000

Fair Value Of Financial Instr22

Fair Value Of Financial Instruments (Tables)	6 Months Ended
	Mar. 31, 2017
Fair Value Disclosures [Abstract]
Schedule Of Fair Value Assets Measured On A Recurring Basis	The following tables provide the level of valuation assumption used to determine the carrying value of the Company's assets measured at fair value on a recurring basis at the dates presented. March 31, 2017 Quoted Prices Significant Significant in Active Markets Other Observable Unobservable Carrying for Identical Assets Inputs Inputs Value (Level 1) (Level 2) (Level 3) (Dollars in thousands) AFS Securities: GSE debentures $ 295,588 $ — $ 295,588 $ — MBS 166,051 — 166,051 — Municipal bonds 1,530 — 1,530 — Trust preferred securities 1,914 — — 1,914 $ 465,083 $ — $ 463,169 $ 1,914 September 30, 2016 Quoted Prices Significant Significant in Active Markets Other Observable Unobservable Carrying for Identical Assets Inputs Inputs Value (Level 1) (Level 2) (Level 3) (Dollars in thousands) AFS Securities: GSE debentures $ 347,038 $ — $ 347,038 $ — MBS 178,507 — 178,507 — Municipal bonds — — — — Trust preferred securities 1,756 — — 1,756 $ 527,301 $ — $ 525,545 $ 1,756
Schedule Of Fair Value Assets Measured On A Non-recurring Basis	The following tables provide the level of valuation assumptions used to determine the carrying value of the Company's assets measured at fair value on a non-recurring basis at the dates presented. March 31, 2017 Quoted Prices Significant Significant in Active Markets Other Observable Unobservable Carrying for Identical Assets Inputs Inputs Value (Level 1) (Level 2) (Level 3) (Dollars in thousands) Loans individually evaluated for impairment $ 42,075 $ — $ — $ 42,075 OREO 2,661 — — 2,661 $ 44,736 $ — $ — $ 44,736 September 30, 2016 Quoted Prices Significant Significant in Active Markets Other Observable Unobservable Carrying for Identical Assets Inputs Inputs Value (Level 1) (Level 2) (Level 3) (Dollars in thousands) Loans individually evaluated for impairment $ 41,995 $ — $ — $ 41,995 OREO 3,734 — — 3,734 $ 45,729 $ — $ — $ 45,729
Schedule Of Carrying Amounts And Estimated Fair Values Of Financial Instruments	The carrying amounts and estimated fair values of the Company's financial instruments, at the dates presented, were as follows: March 31, 2017 September 30, 2016 Estimated Estimated Carrying Fair Carrying Fair Amount Value Amount Value (Dollars in thousands) Assets: Cash and cash equivalents $ 240,587 $ 240,587 $ 281,764 $ 281,764 AFS securities 465,083 465,083 527,301 527,301 HTM securities 954,110 959,541 1,100,874 1,122,867 Loans receivable 7,193,721 7,310,421 6,958,024 7,292,971 FHLB stock 105,475 105,475 109,970 109,970 Liabilities: Deposits 5,269,234 5,278,715 5,164,018 5,204,251 FHLB borrowings 2,273,113 2,289,036 2,372,389 2,434,151 Repurchase agreements 200,000 202,952 200,000 207,303

Summary of Significant Accoun23

Summary of Significant Accounting Policies (Narrative) (Details) $ in Millions	Mar. 31, 2017USD ($)
Leverage Strategy [Member]
Summary Of Significant Accounting Policies [Line Items]
FHLB Borrowings available for leverage strategy, maximum	$ 2,100

Earnings Per Share (Details)

Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016
Earnings Per Share
Net income	$ 21,587	$ 21,527	$ 42,165	$ 42,245
Income allocated to participating securities	(12)	(16)	(25)	(43)
Net income available to common stockholders	$ 21,575	$ 21,511	$ 42,140	$ 42,202
Total basic average common shares outstanding	134,066,189	132,960,030	133,879,350	132,890,781
Effect of dilutive stock options	192,633	71,012	223,097	80,473
Total diluted average common shares outstanding	134,258,822	133,031,042	134,102,447	132,971,254
Net EPS:
Basic	$ 0.16	$ 0.16	$ 0.31	$ 0.32
Diluted	$ 0.16	$ 0.16	$ 0.31	$ 0.32
Antidilutive stock options, excluded from the diluted average common shares outstanding calculation	187,327	921,199	212,133	898,386
Average Common Shares Outstanding [Member]
Earnings Per Share
Total basic average common shares outstanding	134,024,890	132,918,277	133,858,701	132,869,793
Average Committed ESOP Shares Outstanding [Member]
Earnings Per Share
Total basic average common shares outstanding	41,299	41,753	20,649	20,988

Securities (Narrative) (Details

Securities (Narrative) (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Mar. 31, 2017	Sep. 30, 2016
Marketable Securities [Abstract]
Other than temporary impairments, amount	$ 0	$ 0

Securities (Amortized Cost, Est

Securities (Amortized Cost, Estimated Fair Value, and Gross Unrealized Gains and Losses of AFS and HTM Securities) (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Sep. 30, 2016
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost	$ 458,295	$ 517,791
Available-for-sale Securities, Gross Unrealized Gains	7,739	9,884
Available-for-sale Securities, Gross Unrealized Losses	951	374
Available-for-sale Securities, Estimated Fair Value	465,083	527,301
Schedule of Held-to-maturity Securities [Line Items]
Held-to-maturity Securities, Amortized Cost	954,110	1,100,874
Held-to-maturity Securities, Gross Unrealized Gains	11,946	23,219
Held-to-maturity Securities, Gross Unrealized Losses	6,515	1,226
Held-to-maturity securities, Estimated Fair Value	959,541	1,122,867
GSE Debentures [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost	296,266	346,226
Available-for-sale Securities, Gross Unrealized Gains	63	815
Available-for-sale Securities, Gross Unrealized Losses	741	3
Available-for-sale Securities, Estimated Fair Value	295,588	347,038
MBS [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost	158,414	169,442
Available-for-sale Securities, Gross Unrealized Gains	7,676	9,069
Available-for-sale Securities, Gross Unrealized Losses	39	4
Available-for-sale Securities, Estimated Fair Value	166,051	178,507
Schedule of Held-to-maturity Securities [Line Items]
Held-to-maturity Securities, Amortized Cost	924,819	1,067,571
Held-to-maturity Securities, Gross Unrealized Gains	11,845	22,862
Held-to-maturity Securities, Gross Unrealized Losses	6,456	1,219
Held-to-maturity securities, Estimated Fair Value	930,208	1,089,214
Trust Preferred Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost	2,080	2,123
Available-for-sale Securities, Gross Unrealized Gains	0	0
Available-for-sale Securities, Gross Unrealized Losses	166	367
Available-for-sale Securities, Estimated Fair Value	1,914	1,756
Municipal Bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost	1,535
Available-for-sale Securities, Gross Unrealized Gains	0
Available-for-sale Securities, Gross Unrealized Losses	5
Available-for-sale Securities, Estimated Fair Value	1,530	0
Schedule of Held-to-maturity Securities [Line Items]
Held-to-maturity Securities, Amortized Cost	29,291	33,303
Held-to-maturity Securities, Gross Unrealized Gains	101	357
Held-to-maturity Securities, Gross Unrealized Losses	59	7
Held-to-maturity securities, Estimated Fair Value	$ 29,333	$ 33,653

Securities (Schedule Of Estimat

Securities (Schedule Of Estimated Fair Value And Gross Unrealized Losses Of Securities In Continuous Unrealized Loss Position) (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Sep. 30, 2016
Schedule of Investments [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less Than 12 Months, Estimated Fair Value	$ 211,389	$ 24,997
Available-for-sale Securities, Continuous Unrealized Loss Position, Less Than 12 Months, Unrealized Losses	780	3
Available-for-sale Securities, Continuous Unrealized Loss Position, Equal to or Greater Than 12 Months, Estimated Fair Value	2,543	2,410
Available-for-sale Securities, Continuous Unrealized Loss Position, Equal to or Greater Than 12 Months, Unrealized Losses	171	371
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less Than 12 Months, Estimated Fair Value	457,728	152,701
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less Than 12 Months, Unrealized Losses	4,590	544
Held-to-maturity Securities, Continuous Unrealized Loss Position, Equal to or Greater Than 12 Months, Estimated Fair Value	85,696	67,037
Held-to-maturity Securities, Continuous Unrealized Loss Position, Equal to or Greater Than 12 Months, Unrealized Losses	1,925	682
GSE Debentures [Member]
Schedule of Investments [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less Than 12 Months, Estimated Fair Value	199,231	24,997
Available-for-sale Securities, Continuous Unrealized Loss Position, Less Than 12 Months, Unrealized Losses	741	3
Available-for-sale Securities, Continuous Unrealized Loss Position, Equal to or Greater Than 12 Months, Estimated Fair Value	0	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Equal to or Greater Than 12 Months, Unrealized Losses	0	0
Trust Preferred Securities [Member]
Schedule of Investments [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less Than 12 Months, Estimated Fair Value	0	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Less Than 12 Months, Unrealized Losses	0	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Equal to or Greater Than 12 Months, Estimated Fair Value	1,914	1,756
Available-for-sale Securities, Continuous Unrealized Loss Position, Equal to or Greater Than 12 Months, Unrealized Losses	166	367
MBS [Member]
Schedule of Investments [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less Than 12 Months, Estimated Fair Value	10,628	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Less Than 12 Months, Unrealized Losses	34	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Equal to or Greater Than 12 Months, Estimated Fair Value	629	654
Available-for-sale Securities, Continuous Unrealized Loss Position, Equal to or Greater Than 12 Months, Unrealized Losses	5	4
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less Than 12 Months, Estimated Fair Value	448,666	147,930
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less Than 12 Months, Unrealized Losses	4,533	538
Held-to-maturity Securities, Continuous Unrealized Loss Position, Equal to or Greater Than 12 Months, Estimated Fair Value	85,249	66,646
Held-to-maturity Securities, Continuous Unrealized Loss Position, Equal to or Greater Than 12 Months, Unrealized Losses	1,923	681
Municipal Bonds [Member]
Schedule of Investments [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less Than 12 Months, Estimated Fair Value	1,530
Available-for-sale Securities, Continuous Unrealized Loss Position, Less Than 12 Months, Unrealized Losses	5
Available-for-sale Securities, Continuous Unrealized Loss Position, Equal to or Greater Than 12 Months, Estimated Fair Value	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Equal to or Greater Than 12 Months, Unrealized Losses	0
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less Than 12 Months, Estimated Fair Value	9,062	4,771
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less Than 12 Months, Unrealized Losses	57	6
Held-to-maturity Securities, Continuous Unrealized Loss Position, Equal to or Greater Than 12 Months, Estimated Fair Value	447	391
Held-to-maturity Securities, Continuous Unrealized Loss Position, Equal to or Greater Than 12 Months, Unrealized Losses	$ 2	$ 1

Securities (Schedule Of Contrac

Securities (Schedule Of Contractual Maturities) (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Sep. 30, 2016
Investment Holdings [Line Items]
Available-for-sale Securities, Amortized Cost	$ 458,295	$ 517,791
Available-for-sale Securities, Amortized Cost	458,295	517,791
Available-for-sale Securities, Estimated Fair Value	465,083	527,301
Available-for-sale Securities, Estimated Fair Value	465,083	527,301
Held-to-maturity Securities, Amortized Cost	954,110	1,100,874
Held-to-maturity Securities, Amortized Cost	954,110	1,100,874
Held-to-maturity Securities, Estimated Fair Value	959,541	1,122,867
Held-to-maturity securities, Estimated Fair Value	959,541	1,122,867
Debt Securities [Member]
Investment Holdings [Line Items]
Available-for-sale Securities, One year or less, Amortized Cost	75,020
Available-for-sale Securities, One year through five years, Amortized Cost	222,781
Available-for-sale Securities, Five years through ten years, Amortized Cost	0
Available-for-sale Securities, Ten years and thereafter, Amortized Cost	2,080
Available-for-sale Securities, Amortized Cost	299,881
Available-for-sale Securities, Amortized Cost	299,881
Available-for-sale Securities, One year or less, Estimated Fair Value	75,020
Available-for-sale Securities, One year through five years, Estimated Fair Value	222,098
Available-for-sale Securities, Five years through ten years, Estimated Fair Value	0
Available-for-sale Securities, Ten years and thereafter, Estimated Fair Value	1,914
Available-for-sale Securities, Estimated Fair Value	299,032
Available-for-sale Securities, Estimated Fair Value	299,032
Held-to-maturity Securities, One year or less, Amortized Cost	6,105
Held-to-maturity Securities, One year through five years, Amortized Cost	20,997
Held-to-maturity Securities, Five years through ten years, Amortized Cost	2,189
Held-to-maturity Securities, Ten years and thereafter, Amortized Cost	0
Held-to-maturity Securities, Amortized Cost	29,291
Held-to-maturity Securities, Amortized Cost	29,291
Held-to-maturity Securities, One year or less, Estimated Fair Value	6,142
Held-to-maturity Securities, One year through five years, Estimated Fair Value	20,986
Held-to-maturity Securities, Five years through ten years, Estimated Fair Value	2,205
Held-to-maturity Securities, Ten years and thereafter, Estimated Fair Value	0
Held-to-maturity Securities, Estimated Fair Value	29,333
Held-to-maturity securities, Estimated Fair Value	29,333
MBS [Member]
Investment Holdings [Line Items]
Available-for-sale Securities, Amortized Cost	158,414	169,442
Available-for-sale Securities, Amortized Cost	158,414	169,442
Available-for-sale Securities, Estimated Fair Value	166,051	178,507
Available-for-sale Securities, Estimated Fair Value	166,051	178,507
Held-to-maturity Securities, Amortized Cost	924,819	1,067,571
Held-to-maturity Securities, Amortized Cost	924,819	1,067,571
Held-to-maturity Securities, Estimated Fair Value	930,208	1,089,214
Held-to-maturity securities, Estimated Fair Value	$ 930,208	$ 1,089,214

Securities (Schedule Of Taxable

Securities (Schedule Of Taxable And Non-taxable Components Of Interest Income) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016
Marketable Securities [Abstract]
Taxable	$ 1,000	$ 1,314	$ 1,964	$ 2,668
Non-taxable	131	171	274	350
Interest income on investment securities	$ 1,131	$ 1,485	$ 2,238	$ 3,018

Securities (Schedule Of Carryin

Securities (Schedule Of Carrying Value Of Securities Pledged As Collateral) (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Sep. 30, 2016
Marketable Securities [Abstract]
Public unit deposits	$ 394,335	$ 419,282
Repurchase agreements	214,773	217,374
FRB of Kansas City	13,686	15,938
Total securities pledged as collateral	$ 622,794	$ 652,594

Loans Receivable And Allowanc31

Loans Receivable And Allowance For Credit Losses (Narrative) (Details) $ in Thousands	Mar. 31, 2017USD ($)	Sep. 30, 2016USD ($)
Loans Receivable [Line Items]
Loan-to-value ratio securing commercial real estate loans, maximum	80.00%
Debt service coverage ratio for commercial real estate loans, minimum	1.25
Recorded investment of loans in process of foreclosure	$ 7,200	$ 5,700
Carrying value of residential OREO	2,700	2,500
Loans receivable	7,193,721	6,958,024
ACL maintained for individually evaluated impaired loans	0	0
Doubtful [Member]
Loans Receivable [Line Items]
Loans receivable	$ 0	$ 0

Loans Receivable And Allowanc32

Loans Receivable And Allowance For Credit Losses (Summary Of Loans Receivable) (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Sep. 30, 2016
Loans Receivable [Line Items]
Loans receivable, gross	$ 7,182,346	$ 6,949,522
Total real estate loans	7,058,443	6,821,913
ACL	8,447	8,540
Discounts/unearned loan fees	25,318	24,933
Premiums/deferred costs	(45,140)	(41,975)
Loans receivable, net	7,193,721	6,958,024
One- to Four-Family Segment [Member]
Loans Receivable [Line Items]
Loans receivable, gross	6,839,166	6,667,770
One- to Four-Family Segment [Member] | Originated [Member]
Loans Receivable [Line Items]
Loans receivable, gross	4,025,985	4,005,615
One- to Four-Family Segment [Member] | Correspondent Purchased [Member]
Loans Receivable [Line Items]
Loans receivable, gross	2,396,663	2,206,072
One- to Four-Family Segment [Member] | Bulk Purchased [Member]
Loans Receivable [Line Items]
Loans receivable, gross	385,700	416,653
One- to Four-Family Segment [Member] | Construction [Member]
Loans Receivable [Line Items]
Loans receivable, gross	30,818	39,430
Commercial Real Estate Segment [Member]
Loans Receivable [Line Items]
Loans receivable, gross	219,277	154,143
Commercial Real Estate Segment [Member] | Construction [Member]
Loans Receivable [Line Items]
Loans receivable, gross	116,471	43,375
Commercial Real Estate Segment [Member] | Permanent [Member]
Loans Receivable [Line Items]
Loans receivable, gross	102,806	110,768
Consumer Segment [Member]
Loans Receivable [Line Items]
Loans receivable, gross	123,903	127,609
Consumer Segment [Member] | Home Equity [Member]
Loans Receivable [Line Items]
Loans receivable, gross	119,434	123,345
Consumer Segment [Member] | Other [Member]
Loans Receivable [Line Items]
Loans receivable, gross	$ 4,469	$ 4,264

Loans Receivable And Allowanc33

Loans Receivable And Allowance For Credit Losses (Recorded Investment in Loans, Past Due) (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Sep. 30, 2016
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, total delinquent loans	$ 29,802	$ 39,767
Financing receivable, current loans	7,172,366	6,926,797
Financing receivable, total recorded investment	7,202,168	6,966,564
Financing Receivables, 30 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, total delinquent loans	15,953	22,713
Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, total delinquent loans	13,849	17,054
One- to Four-Family Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, total recorded investment	6,860,065	6,685,873
One- to Four-Family Segment [Member] | Originated [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, total delinquent loans	16,186	21,698
Financing receivable, current loans	4,025,590	4,007,012
Financing receivable, total recorded investment	4,041,776	4,028,710
One- to Four-Family Segment [Member] | Originated [Member] | Financing Receivables, 30 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, total delinquent loans	10,853	13,545
One- to Four-Family Segment [Member] | Originated [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, total delinquent loans	5,333	8,153
One- to Four-Family Segment [Member] | Correspondent Purchased [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, total delinquent loans	1,657	4,381
Financing receivable, current loans	2,428,961	2,233,941
Financing receivable, total recorded investment	2,430,618	2,238,322
One- to Four-Family Segment [Member] | Correspondent Purchased [Member] | Financing Receivables, 30 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, total delinquent loans	749	3,389
One- to Four-Family Segment [Member] | Correspondent Purchased [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, total delinquent loans	908	992
One- to Four-Family Segment [Member] | Bulk Purchased [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, total delinquent loans	10,734	12,462
Financing receivable, current loans	376,937	406,379
Financing receivable, total recorded investment	387,671	418,841
One- to Four-Family Segment [Member] | Bulk Purchased [Member] | Financing Receivables, 30 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, total delinquent loans	3,556	5,082
One- to Four-Family Segment [Member] | Bulk Purchased [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, total delinquent loans	7,178	7,380
Commercial Real Estate Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, total delinquent loans	0	0
Financing receivable, current loans	218,200	153,082
Financing receivable, total recorded investment	218,200	153,082
Commercial Real Estate Segment [Member] | Financing Receivables, 30 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, total delinquent loans	0	0
Commercial Real Estate Segment [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, total delinquent loans	0	0
Consumer Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, total recorded investment	123,903	127,609
Consumer Segment [Member] | Home Equity [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, total delinquent loans	1,184	1,155
Financing receivable, current loans	118,250	122,190
Financing receivable, total recorded investment	119,434	123,345
Consumer Segment [Member] | Home Equity [Member] | Financing Receivables, 30 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, total delinquent loans	761	635
Consumer Segment [Member] | Home Equity [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, total delinquent loans	423	520
Consumer Segment [Member] | Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, total delinquent loans	41	71
Financing receivable, current loans	4,428	4,193
Financing receivable, total recorded investment	4,469	4,264
Consumer Segment [Member] | Other [Member] | Financing Receivables, 30 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, total delinquent loans	34	62
Consumer Segment [Member] | Other [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, total delinquent loans	$ 7	$ 9

Loans Receivable And Allowanc34

Loans Receivable And Allowance For Credit Losses (Recorded Investment in Loans, Nonaccrual) (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Sep. 30, 2016
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, nonaccrual loans	$ 26,239	$ 29,143
One- to Four-Family Segment [Member] | Originated [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, nonaccrual loans	15,974	17,086
One- to Four-Family Segment [Member] | Correspondent Purchased [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, nonaccrual loans	1,497	3,788
One- to Four-Family Segment [Member] | Bulk Purchased [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, nonaccrual loans	7,991	7,411
Commercial Real Estate Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, nonaccrual loans	0	0
Consumer Segment [Member] | Home Equity [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, nonaccrual loans	770	848
Consumer Segment [Member] | Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, nonaccrual loans	$ 7	$ 10

Loans Receivable And Allowanc35

Loans Receivable And Allowance For Credit Losses (Recorded Investment In Classified Loans) (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Sep. 30, 2016
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, total recorded investment	$ 7,202,168	$ 6,966,564
Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, total recorded investment	10,354	13,956
Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, total recorded investment	46,985	45,913
One- to Four-Family Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, total recorded investment	6,860,065	6,685,873
One- to Four-Family Segment [Member] | Originated [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, total recorded investment	4,041,776	4,028,710
One- to Four-Family Segment [Member] | Originated [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, total recorded investment	9,081	10,242
One- to Four-Family Segment [Member] | Originated [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, total recorded investment	29,167	27,818
One- to Four-Family Segment [Member] | Correspondent Purchased [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, total recorded investment	2,430,618	2,238,322
One- to Four-Family Segment [Member] | Correspondent Purchased [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, total recorded investment	365	2,496
One- to Four-Family Segment [Member] | Correspondent Purchased [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, total recorded investment	5,269	5,168
One- to Four-Family Segment [Member] | Bulk Purchased [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, total recorded investment	387,671	418,841
One- to Four-Family Segment [Member] | Bulk Purchased [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, total recorded investment	867	1,156
One- to Four-Family Segment [Member] | Bulk Purchased [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, total recorded investment	11,069	11,480
Commercial Real Estate Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, total recorded investment	218,200	153,082
Commercial Real Estate Segment [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, total recorded investment	0	0
Commercial Real Estate Segment [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, total recorded investment	0	0
Consumer Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, total recorded investment	123,903	127,609
Consumer Segment [Member] | Home Equity [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, total recorded investment	119,434	123,345
Consumer Segment [Member] | Home Equity [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, total recorded investment	41	54
Consumer Segment [Member] | Home Equity [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, total recorded investment	1,463	1,431
Consumer Segment [Member] | Other [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, total recorded investment	4,469	4,264
Consumer Segment [Member] | Other [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, total recorded investment	0	8
Consumer Segment [Member] | Other [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, total recorded investment	$ 17	$ 16

Loans Receivable And Allowanc36

Loans Receivable And Allowance For Credit Losses (LTV And Credit Score Information For Originated, Correspondent Purchased, And Bulk Purchased One-To Four-Family Loans And Originated Consumer Home Equity Loans) (Details)	Mar. 31, 2017	Sep. 30, 2016
Financing Receivable, Recorded Investment [Line Items]
Weighted average credit score	765	764
Weighted average LTV	64.00%	64.00%
One- to Four-Family Segment [Member] | Originated [Member]
Financing Receivable, Recorded Investment [Line Items]
Weighted average credit score	767	766
Weighted average LTV	63.00%	63.00%
One- to Four-Family Segment [Member] | Correspondent Purchased [Member]
Financing Receivable, Recorded Investment [Line Items]
Weighted average credit score	764	764
Weighted average LTV	68.00%	68.00%
One- to Four-Family Segment [Member] | Bulk Purchased [Member]
Financing Receivable, Recorded Investment [Line Items]
Weighted average credit score	754	753
Weighted average LTV	63.00%	64.00%
Consumer Segment [Member] | Home Equity [Member]
Financing Receivable, Recorded Investment [Line Items]
Weighted average credit score	756	755
Weighted average LTV	19.00%	20.00%

Loans Receivable And Allowanc37

Loans Receivable And Allowance For Credit Losses (Troubled Debt Restructurings On Financing Receivables) (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2017USD ($)	Mar. 31, 2016USD ($)	Mar. 31, 2017USD ($)	Mar. 31, 2016USD ($)
Financing Receivable, Modifications [Line Items]
Number of Contracts	54	34	100	69
Pre-Restructured Outstanding	$ 6,418	$ 4,270	$ 10,552	$ 7,560
Post-Restructured Outstanding	$ 6,568	$ 4,386	$ 10,965	$ 7,734
One- to Four-Family Segment [Member] | Originated [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	43	28	81	58
Pre-Restructured Outstanding	$ 5,360	$ 3,433	$ 9,288	$ 6,539
Post-Restructured Outstanding	$ 5,492	$ 3,542	$ 9,677	$ 6,707
One- to Four-Family Segment [Member] | Correspondent Purchased [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	3	4	3	4
Pre-Restructured Outstanding	$ 260	$ 826	$ 260	$ 826
Post-Restructured Outstanding	$ 261	$ 833	$ 261	$ 833
One- to Four-Family Segment [Member] | Bulk Purchased [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	2	0	2	1
Pre-Restructured Outstanding	$ 687	$ 0	$ 687	$ 123
Post-Restructured Outstanding	$ 700	$ 0	$ 700	$ 122
Commercial Real Estate Segment [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	0	0	0
Pre-Restructured Outstanding	$ 0	$ 0	$ 0	$ 0
Post-Restructured Outstanding	$ 0	$ 0	$ 0	$ 0
Consumer Segment [Member] | Home Equity [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	6	1	14	5
Pre-Restructured Outstanding	$ 111	$ 3	$ 317	$ 64
Post-Restructured Outstanding	$ 115	$ 3	$ 327	$ 64
Consumer Segment [Member] | Other [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	1	0	1
Pre-Restructured Outstanding	$ 0	$ 8	$ 0	$ 8
Post-Restructured Outstanding	$ 0	$ 8	$ 0	$ 8

Loans Receivable And Allowanc38

Loans Receivable And Allowance For Credit Losses (Troubled Debt Restructurings On Financing Receivables That Subsequently Defaulted) (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2017USD ($)	Mar. 31, 2016USD ($)	Mar. 31, 2017USD ($)	Mar. 31, 2016USD ($)
Financing Receivable, Modifications [Line Items]
Number of Contracts	16	18	31	31
Recorded Investment	$ 1,293	$ 1,815	$ 2,386	$ 2,693
One- to Four-Family Segment [Member] | Originated [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	11	16	22	27
Recorded Investment	$ 1,069	$ 1,802	$ 2,047	$ 2,602
One- to Four-Family Segment [Member] | Correspondent Purchased [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	0	0	0
Recorded Investment	$ 0	$ 0	$ 0	$ 0
One- to Four-Family Segment [Member] | Bulk Purchased [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	0	0	0
Recorded Investment	$ 0	$ 0	$ 0	$ 0
Commercial Real Estate Segment [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	0	0	0
Recorded Investment	$ 0	$ 0	$ 0	$ 0
Consumer Segment [Member] | Home Equity [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	5	2	9	4
Recorded Investment	$ 224	$ 13	$ 339	$ 91
Consumer Segment [Member] | Other [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	0	0	0
Recorded Investment	$ 0	$ 0	$ 0	$ 0

Loans Receivable And Allowanc39

Loans Receivable And Allowance For Credit Losses (Impaired Loans By Class, Instant Related Disclosures) (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Sep. 30, 2016
Financing Receivable, Impaired [Line Items]
Recorded Investment, No Related Allowance	$ 40,391	$ 37,954
Recorded Investment, Allowance Recorded	16,060	18,296
Recorded Investment	56,451	56,250
Unpaid Principal Balance, No Related Allowance	42,857	40,546
Unpaid Principal Balance, Allowance Recorded	16,062	18,321
Unpaid Principal Balance	58,919	58,867
Related ACL	117	217
With no related allowance recorded [Member]
Financing Receivable, Impaired [Line Items]
Related ACL	0	0
With an allowance recorded [Member]
Financing Receivable, Impaired [Line Items]
Related ACL	117	217
One- to Four-Family Segment [Member] | Originated [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment, No Related Allowance	24,560	22,982
Recorded Investment, Allowance Recorded	12,381	13,430
Recorded Investment	36,941	36,412
Unpaid Principal Balance, No Related Allowance	25,243	23,640
Unpaid Principal Balance, Allowance Recorded	12,415	13,476
Unpaid Principal Balance	37,658	37,116
Related ACL	72	125
One- to Four-Family Segment [Member] | Originated [Member] | With no related allowance recorded [Member]
Financing Receivable, Impaired [Line Items]
Related ACL	0	0
One- to Four-Family Segment [Member] | Originated [Member] | With an allowance recorded [Member]
Financing Receivable, Impaired [Line Items]
Related ACL	72	125
One- to Four-Family Segment [Member] | Correspondent Purchased [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment, No Related Allowance	3,841	2,963
Recorded Investment, Allowance Recorded	1,993	2,662
Recorded Investment	5,834	5,625
Unpaid Principal Balance, No Related Allowance	3,828	2,950
Unpaid Principal Balance, Allowance Recorded	1,991	2,664
Unpaid Principal Balance	5,819	5,614
Related ACL	7	4
One- to Four-Family Segment [Member] | Correspondent Purchased [Member] | With no related allowance recorded [Member]
Financing Receivable, Impaired [Line Items]
Related ACL	0	0
One- to Four-Family Segment [Member] | Correspondent Purchased [Member] | With an allowance recorded [Member]
Financing Receivable, Impaired [Line Items]
Related ACL	7	4
One- to Four-Family Segment [Member] | Bulk Purchased [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment, No Related Allowance	10,821	10,985
Recorded Investment, Allowance Recorded	1,279	1,650
Recorded Investment	12,100	12,635
Unpaid Principal Balance, No Related Allowance	12,388	12,684
Unpaid Principal Balance, Allowance Recorded	1,249	1,627
Unpaid Principal Balance	13,637	14,311
Related ACL	19	49
One- to Four-Family Segment [Member] | Bulk Purchased [Member] | With no related allowance recorded [Member]
Financing Receivable, Impaired [Line Items]
Related ACL	0	0
One- to Four-Family Segment [Member] | Bulk Purchased [Member] | With an allowance recorded [Member]
Financing Receivable, Impaired [Line Items]
Related ACL	19	49
Commercial Real Estate Segment [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment, No Related Allowance	0	0
Recorded Investment, Allowance Recorded	0	0
Recorded Investment	0	0
Unpaid Principal Balance, No Related Allowance	0	0
Unpaid Principal Balance, Allowance Recorded	0	0
Unpaid Principal Balance	0	0
Related ACL	0	0
Commercial Real Estate Segment [Member] | With no related allowance recorded [Member]
Financing Receivable, Impaired [Line Items]
Related ACL	0	0
Commercial Real Estate Segment [Member] | With an allowance recorded [Member]
Financing Receivable, Impaired [Line Items]
Related ACL	0	0
Consumer Segment [Member] | Home Equity [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment, No Related Allowance	1,164	1,014
Recorded Investment, Allowance Recorded	394	548
Recorded Investment	1,558	1,562
Unpaid Principal Balance, No Related Allowance	1,372	1,230
Unpaid Principal Balance, Allowance Recorded	394	548
Unpaid Principal Balance	1,766	1,778
Related ACL	17	38
Consumer Segment [Member] | Home Equity [Member] | With no related allowance recorded [Member]
Financing Receivable, Impaired [Line Items]
Related ACL	0	0
Consumer Segment [Member] | Home Equity [Member] | With an allowance recorded [Member]
Financing Receivable, Impaired [Line Items]
Related ACL	17	38
Consumer Segment [Member] | Other [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment, No Related Allowance	5	10
Recorded Investment, Allowance Recorded	13	6
Recorded Investment	18	16
Unpaid Principal Balance, No Related Allowance	26	42
Unpaid Principal Balance, Allowance Recorded	13	6
Unpaid Principal Balance	39	48
Related ACL	2	1
Consumer Segment [Member] | Other [Member] | With no related allowance recorded [Member]
Financing Receivable, Impaired [Line Items]
Related ACL	0	0
Consumer Segment [Member] | Other [Member] | With an allowance recorded [Member]
Financing Receivable, Impaired [Line Items]
Related ACL	$ 2	$ 1

Loans Receivable And Allowanc40

Loans Receivable And Allowance For Credit Losses (Impaired Loans By Class, Duration Related Disclosures) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016
Financing Receivable, Impaired [Line Items]
Average Recorded Investment, No Related Allowance	$ 39,837	$ 23,871	$ 38,523	$ 23,049
Average Recorded Investment, Allowance Recorded	15,620	30,142	16,879	31,450
Average Recorded Investment	55,457	54,013	55,402	54,499
Interest Income Recognized, No Related Allowance	335	186	640	358
Interest Income Recognized, Allowance Recorded	155	294	321	577
Interest Income Recognized	490	480	961	935
One- to Four-Family Segment [Member] | Originated [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment, No Related Allowance	23,825	11,381	23,139	11,059
Average Recorded Investment, Allowance Recorded	12,145	25,437	12,859	26,089
Average Recorded Investment	35,970	36,818	35,998	37,148
Interest Income Recognized, No Related Allowance	218	119	423	229
Interest Income Recognized, Allowance Recorded	125	256	250	507
Interest Income Recognized	343	375	673	736
One- to Four-Family Segment [Member] | Correspondent Purchased [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment, No Related Allowance	4,045	203	3,498	165
Average Recorded Investment, Allowance Recorded	1,477	2,216	1,982	1,783
Average Recorded Investment	5,522	2,419	5,480	1,948
Interest Income Recognized, No Related Allowance	35	3	59	6
Interest Income Recognized, Allowance Recorded	11	16	32	30
Interest Income Recognized	46	19	91	36
One- to Four-Family Segment [Member] | Bulk Purchased [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment, No Related Allowance	10,877	11,637	10,846	11,218
Average Recorded Investment, Allowance Recorded	1,481	1,515	1,473	2,601
Average Recorded Investment	12,358	13,152	12,319	13,819
Interest Income Recognized, No Related Allowance	49	49	95	100
Interest Income Recognized, Allowance Recorded	5	7	10	14
Interest Income Recognized	54	56	105	114
Commercial Real Estate Segment [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment, No Related Allowance	0	0	0	0
Average Recorded Investment, Allowance Recorded	0	0	0	0
Average Recorded Investment	0	0	0	0
Interest Income Recognized, No Related Allowance	0	0	0	0
Interest Income Recognized, Allowance Recorded	0	0	0	0
Interest Income Recognized	0	0	0	0
Consumer Segment [Member] | Home Equity [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment, No Related Allowance	1,080	636	1,030	595
Average Recorded Investment, Allowance Recorded	505	957	553	963
Average Recorded Investment	1,585	1,593	1,583	1,558
Interest Income Recognized, No Related Allowance	33	15	63	23
Interest Income Recognized, Allowance Recorded	14	15	29	26
Interest Income Recognized	47	30	92	49
Consumer Segment [Member] | Other [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment, No Related Allowance	10	14	10	12
Average Recorded Investment, Allowance Recorded	12	17	12	14
Average Recorded Investment	22	31	22	26
Interest Income Recognized, No Related Allowance	0	0	0	0
Interest Income Recognized, Allowance Recorded	0	0	0	0
Interest Income Recognized	$ 0	$ 0	$ 0	$ 0

Loans Receivable And Allowanc41

Loans Receivable And Allowance For Credit Losses (Allowance For Credit Losses) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	$ 8,521	$ 9,201	$ 8,540	$ 9,443
Charge-offs	(82)	(75)	(114)	(325)
Recoveries	8	67	21	75
Provision for credit losses	0	0	0	0
Ending Balance	8,447	9,193	8,447	9,193
One- to Four-Family Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	6,819	8,122	7,095	8,414
Charge-offs	(65)	(55)	(89)	(287)
Recoveries	0	57	0	60
Provision for credit losses	(463)	(42)	(715)	(105)
Ending Balance	6,291	8,082	6,291	8,082
One- to Four-Family Segment [Member] | Originated [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	3,743	4,812	3,928	4,865
Charge-offs	(17)	(17)	(41)	(74)
Recoveries	0	39	0	42
Provision for credit losses	(375)	(258)	(536)	(257)
Ending Balance	3,351	4,576	3,351	4,576
One- to Four-Family Segment [Member] | Correspondent Purchased [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	2,064	2,020	2,102	2,115
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Provision for credit losses	(124)	243	(162)	148
Ending Balance	1,940	2,263	1,940	2,263
One- to Four-Family Segment [Member] | Bulk Purchased [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	1,012	1,290	1,065	1,434
Charge-offs	(48)	(38)	(48)	(213)
Recoveries	0	18	0	18
Provision for credit losses	36	(27)	(17)	4
Ending Balance	1,000	1,243	1,000	1,243
Commercial Real Estate Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	1,495	801	1,208	742
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Provision for credit losses	390	36	677	95
Ending Balance	1,885	837	1,885	837
Consumer Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	207	278	237	287
Charge-offs	(17)	(20)	(25)	(38)
Recoveries	8	10	21	15
Provision for credit losses	73	6	38	10
Ending Balance	$ 271	$ 274	$ 271	$ 274

Loans Receivable And Allowanc42

Loans Receivable And Allowance For Credit Losses (Summary Of Loan Portfolio Segment Disaggregated By The Company's Impairment Method) (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Sep. 30, 2016
Financing Receivable, Impaired [Line Items]
Recorded investment in loans collectively evaluated for impairment	$ 7,160,073	$ 6,924,516
Recorded investment in loans individually evaluated for impairment	42,095	42,048
Financing receivable, total recorded investment	7,202,168	6,966,564
ACL for loans collectively evaluated for impairment	8,447	8,540
One- to Four-Family Segment [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment in loans collectively evaluated for impairment	6,819,260	6,644,930
Recorded investment in loans individually evaluated for impairment	40,805	40,943
Financing receivable, total recorded investment	6,860,065	6,685,873
ACL for loans collectively evaluated for impairment	6,291	7,095
One- to Four-Family Segment [Member] | Originated [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment in loans collectively evaluated for impairment	4,015,889	4,003,750
Recorded investment in loans individually evaluated for impairment	25,887	24,960
Financing receivable, total recorded investment	4,041,776	4,028,710
ACL for loans collectively evaluated for impairment	3,351	3,928
One- to Four-Family Segment [Member] | Correspondent Purchased [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment in loans collectively evaluated for impairment	2,426,776	2,233,347
Recorded investment in loans individually evaluated for impairment	3,842	4,975
Financing receivable, total recorded investment	2,430,618	2,238,322
ACL for loans collectively evaluated for impairment	1,940	2,102
One- to Four-Family Segment [Member] | Bulk Purchased [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment in loans collectively evaluated for impairment	376,595	407,833
Recorded investment in loans individually evaluated for impairment	11,076	11,008
Financing receivable, total recorded investment	387,671	418,841
ACL for loans collectively evaluated for impairment	1,000	1,065
Commercial Real Estate Segment [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment in loans collectively evaluated for impairment	218,200	153,082
Recorded investment in loans individually evaluated for impairment	0	0
Financing receivable, total recorded investment	218,200	153,082
ACL for loans collectively evaluated for impairment	1,885	1,208
Consumer Segment [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment in loans collectively evaluated for impairment	122,613	126,504
Recorded investment in loans individually evaluated for impairment	1,290	1,105
Financing receivable, total recorded investment	123,903	127,609
ACL for loans collectively evaluated for impairment	$ 271	$ 237

Low Income Housing Partnershi43

Low Income Housing Partnerships (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016	Sep. 30, 2016
Investments in Affordable Housing Projects [Abstract]
Investment In affordable housing limited partnerships	$ 55,800		$ 55,800		$ 58,000
Obligations related to investments in affordable housing limited partnerships	24,500		$ 24,500		$ 27,200
Affordable housing tax credits commitment, year to be paid			2,019
Proportional amortization expense, amount	1,100		$ 2,200
Affordable housing tax credits, amount	1,800	$ 1,700	3,500	$ 3,200
Net income tax benefit, low income housing partnerships	$ 729		1,300
Impairment losses from the forfeiture or ineligibility of tax credits or other circumstances, amount			$ 0	$ 0

Repurchase Agreements (Narrativ

Repurchase Agreements (Narrative) (Details) - USD ($) $ in Thousands	6 Months Ended
	Mar. 31, 2017	Sep. 30, 2016
Disclosure of Repurchase Agreements [Abstract]
Repurchase Agreements, Description of Potential Risks	Securities are delivered to the party with whom each transaction is executed and the party agrees to resell the same securities to the Bank at the maturity of the agreement. The Bank retains the right to substitute similar or like securities throughout the terms of the agreements. The repurchase agreements and collateral are subject to valuation at current market levels and the Bank may ask for the return of excess collateral or be required to post additional collateral due to changes in the market values of these items. The Bank may also be required to post additional collateral as a result of principal payments received on the securities pledged.
Repurchase agreements	$ 200,000	$ 200,000
Weighted average rate of repurchase agreements	2.94%	2.94%

Repurchase Agreements (Maturity

Repurchase Agreements (Maturity of Repurchase Agreements) (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Sep. 30, 2016
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	$ 200,000	$ 200,000
Due In 2017 [Member]
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	0
Due In 2018 [Member]
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	100,000
Due In 2019 [Member]
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	0
Due In 2020 [Member]
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	100,000
Due In 2021 [Member]
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	0
Due Thereafter [Member]
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	$ 0

Fair Value Of Financial Instr46

Fair Value Of Financial Instruments (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016	Sep. 30, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Proceeds from principal repayments			$ 96,902	$ 153,512
Loans individually evaluated for impairment	$ 42,075		42,075		$ 41,995
ACL maintained for individually evaluated impaired loans	0		0		0
OREO	$ 2,661		$ 2,661		3,734
Loans Receivable [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Estimated selling costs	10.00%		10.00%
Other Real Estate Owned [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Estimated selling costs	10.00%		10.00%
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans individually evaluated for impairment	$ 0		$ 0		0
OREO	0		0		0
Estimated fair value of deposits	2,460,000		2,460,000		2,340,000
Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans individually evaluated for impairment	0		0		0
OREO	0		0		0
Estimated fair value of deposits	2,820,000		2,820,000		2,870,000
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Proceeds from principal repayments	43	$ 26	62	31
(Decreases) increases in net unrealized losses included in OCI	(45)	$ 29	(125)	$ 68
Loans individually evaluated for impairment	42,075		42,075		41,995
OREO	$ 2,661		$ 2,661		$ 3,734

Fair Value Of Financial Instr47

Fair Value Of Financial Instruments (Schedule Of Fair Value Assets Measured On A Recurring Basis) (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Sep. 30, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
AFS securities	$ 465,083	$ 527,301
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
AFS securities	0	0
Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
AFS securities	463,169	525,545
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
AFS securities	1,914	1,756
GSE Debentures [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
AFS securities	295,588	347,038
GSE Debentures [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
AFS securities	0	0
GSE Debentures [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
AFS securities	295,588	347,038
GSE Debentures [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
AFS securities	0	0
MBS [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
AFS securities	166,051	178,507
MBS [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
AFS securities	0	0
MBS [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
AFS securities	166,051	178,507
MBS [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
AFS securities	0	0
Municipal Bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
AFS securities	1,530	0
Municipal Bonds [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
AFS securities	0	0
Municipal Bonds [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
AFS securities	1,530	0
Municipal Bonds [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
AFS securities	0	0
Trust Preferred Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
AFS securities	1,914	1,756
Trust Preferred Securities [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
AFS securities	0	0
Trust Preferred Securities [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
AFS securities	0	0
Trust Preferred Securities [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
AFS securities	$ 1,914	$ 1,756

Fair Value Of Financial Instr48

Fair Value Of Financial Instruments (Schedule Of Fair Value Assets Measured On A Nonrecurring Basis) (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Sep. 30, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans individually evaluated for impairment	$ 42,075	$ 41,995
OREO	2,661	3,734
Total assets measured at fair value on a non-recurring basis, carrying value	44,736	45,729
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans individually evaluated for impairment	0	0
OREO	0	0
Total assets measured at fair value on a non-recurring basis, carrying value	0	0
Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans individually evaluated for impairment	0	0
OREO	0	0
Total assets measured at fair value on a non-recurring basis, carrying value	0	0
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans individually evaluated for impairment	42,075	41,995
OREO	2,661	3,734
Total assets measured at fair value on a non-recurring basis, carrying value	$ 44,736	$ 45,729

Fair Value Of Financial Instr49

Fair Value Of Financial Instruments (Schedule Of Carrying Amounts And Estimated Fair Values Of Financial Instruments) (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Sep. 30, 2016
Assets:
AFS securities	$ 465,083	$ 527,301
HTM securities	959,541	1,122,867
Carrying Amount [Member]
Assets:
Cash and cash equivalents	240,587	281,764
AFS securities	465,083	527,301
HTM securities	954,110	1,100,874
Loans receivable	7,193,721	6,958,024
FHLB stock	105,475	109,970
Liabilities:
Deposits	5,269,234	5,164,018
FHLB borrowings	2,273,113	2,372,389
Repurchase agreements	200,000	200,000
Estimated Fair Value [Member]
Assets:
Cash and cash equivalents	240,587	281,764
AFS securities	465,083	527,301
HTM securities	959,541	1,122,867
Loans receivable	7,310,421	7,292,971
FHLB stock	105,475	109,970
Liabilities:
Deposits	5,278,715	5,204,251
FHLB borrowings	2,289,036	2,434,151
Repurchase agreements	$ 202,952	$ 207,303