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Loans Receivable (excluding Covered Loans) - Loans Impaired, Loan Commitments and Loans Serviced (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Sep. 30, 2014 | Sep. 30, 2013
Receivables [Abstract] |  |
Recorded investment in impaired loans | $ 435,185 | $ 454,557
Trouble Debt Restructuring included in impaired loans | 374,743 | 415,696
Impaired loans with allocated reserves | 196 | 6,035
Reserves on impaired loans | 60 | 3,473
Average balance of impaired loans | 403,138 | 495,472
Interest income from impaired loans | 21,674 | 24,798
Outstanding fixed-rate origination commitments | 198,504 | 190,363
Loans serviced for others | $ 86,745 | $ 55,589

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- Definition Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953423-111524 + Details
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- Definition Reflects the amount of the write-down related to a troubled debt restructuring. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 40 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=25495931&loc=d3e18845-111554 + Details
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- Definition Amount of interest income recognized that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 + Details
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- Details
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- Definition Financing Receivable, Average Balance of Impaired Loans + References No definition available. + Details
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- Definition Impaired Financing Receivable with Allocated Reserves + References No definition available. + Details
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- Definition Loans and Leases Receivable, Loan Origination Commitments Outstanding + References No definition available. + Details
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- Definition Loans Serviced for Others + References No definition available. + Details
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- Definition Recorded investment in impaired loans + References No definition available. + Details
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