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Fair Values of Financial Instruments | 12 Months Ended
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Sep. 30, 2014
Fair Value Disclosures [Abstract] |
Fair Value of Financial Instruments | FAIR VALUES OF FINANCIAL INSTRUMENTS U.S. GAAP requires disclosure of fair value information about financial instruments, whether or not recognized on the statement of financial condition, for which it is practicable to estimate those values. Certain financial instruments and all non-financial instruments are excluded from the disclosure requirements. Accordingly, the aggregate fair value estimates presented do not reflect the underlying fair value of the Company. Although management is not aware of any factors that would materially affect the estimated fair value amounts presented, such amounts have not been comprehensively revalued for purposes of these financial statements since that date, and therefore, estimates of fair value subsequent to that date may differ significantly from the amounts presented below.
|  | 2014 |  | 2013
| Level | Carrying Amount | Estimated Fair Value |  | Carrying Amount | Estimated Fair Value
|  | (In thousands)
Financial assets |  |  |  |  |  |
Cash and cash equivalents | 1 | $ | 781,843 |  | $ | 781,843 |  |  | $ | 203,563 |  | $ | 203,563 |
Available-for-sale securities: |  |  |  |  |  |
Equity securities | 1 | 101,387 |  | 101,387 |  |  | 101,237 |  | 101,237 |
Obligations of U.S. government | 2 | 731,943 |  | 731,943 |  |  | 533,975 |  | 533,975 |
Obligations of states and political subdivisions | 2 | 23,681 |  | 23,681 |  |  | 22,545 |  | 22,545 |
Obligations of foreign governments |  | — |  | — |  |  | — |  | — |
Corporate debt securities | 2 | 509,007 |  | 509,007 |  |  | 452,015 |  | 452,015 |
Mortgage-backed securities |  |  |  |  |  |
Agency pass-through certificates | 2 | 1,584,508 |  | 1,584,508 |  |  | 1,251,176 |  | 1,251,176 |
Other commercial MBS | 2 | 98,916 |  | 98,916 |  |  | — |  | — |
Total available-for-sale securities |  | 3,049,442 |  | 3,049,442 |  |  | 2,360,948 |  | 2,360,948 |
Held-to-maturity securities: |  |  |  |  |  |
Mortgage-backed securities |  |  |  |  |  |
Agency pass-through certificates | 2 | 1,548,265 |  | 1,499,218 |  |  | 1,654,666 |  | 1,582,849 |
Total held-to-maturity securities |  | 1,548,265 |  | 1,499,218 |  |  | 1,654,666 |  | 1,582,849 |
Loans receivable | 3 | 8,148,322 |  | 8,667,771 |  |  | 7,528,030 |  | 8,070,279 |
Covered loans | 3 | 176,476 |  | 176,761 |  |  | 295,947 |  | 300,610 |
FDIC indemnification asset | 3 | 36,860 |  | 35,976 |  |  | 64,615 |  | 62,300 |
FHLB stock | 2 | 158,839 |  | 158,839 |  |  | 173,009 |  | 173,009 |
Financial liabilities |  |  |  |  |  |
Customer accounts | 2 | 10,716,928 |  | 9,946,586 |  |  | 9,090,271 |  | 8,585,068 |
FHLB advances and other borrowings | 2 | 1,930,000 |  | 2,054,437 |  |  | 1,930,000 |  | 2,064,248 |
For a description of the level in fair value hierarchy under the provisions of the Fair Value Measurements and Disclosures topic of the FASB Accounting Standards Codification please see note Q. The following methods and assumptions were used to estimate the fair value of financial instruments: Cash and cash equivalents – The carrying amount of these items is a reasonable estimate of their fair value. Available-for-sale securities and held-to-maturity securities – Securities at fair value are priced using model pricing based on the securities' relationship to other benchmark quoted prices as provided by an independent third party and under the provisions of the Fair Value Measurements and Disclosures topic of the FASB Accounting Standards Codification are considered a Level 2 input method except for equity securities which are considered a Level 1 input method. Loans receivable and covered loans – For certain homogeneous categories of loans, such as fixed- and variable-rate residential mortgages, fair value is estimated for securities backed by similar loans, adjusted for differences in loan characteristics, using the same methodology described above for AFS and HTM securities. The fair value of other loan types is estimated by discounting the future cash flows and estimated prepayments using the current rates at which similar loans would be made to borrowers with similar credit ratings and for the same remaining term. Some loan types were valued at carrying value because of their floating rate or expected maturity characteristics. Net deferred loan fees are not included in the fair value calculation but are included in the carrying amount. FDIC indemnification asset – The fair value of the indemnification asset is estimated by discounting the expected future cash flows using the current rates. FHLB stock – The fair value is based upon the redemption value of the stock which equates to its carrying value. Customer accounts – The fair value of demand deposits, savings accounts, and money market accounts is the amount payable on demand at the reporting date. The fair value of fixed-maturity certificates of deposit is estimated by discounting the estimated future cash flows using the rates currently offered for deposits with similar remaining maturities. FHLB advances and other borrowings – The fair value of FHLB advances and other borrowings is estimated by discounting the estimated future cash flows using rates currently available to the Company for debt with similar remaining maturities.

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- Definition The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 21 -URI http://asc.fasb.org/extlink&oid=28364263&loc=d3e13537-108611 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=28364263&loc=d3e13433-108611 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=6957238&loc=d3e14064-108612 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 30 -URI http://asc.fasb.org/extlink&oid=6957238&loc=d3e14172-108612 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=28364263&loc=d3e13504-108611 + Details
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