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Covered Assets (Details) (USD $) In Thousands, unless otherwise specified | 6 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2014 | Sep. 30, 2013
Covered Assets [Line Items] |  |
Covered assets | $ 252,610 | $ 326,927
FDIC Indemnification Asset Movement Analysis [Roll Forward] |  |
Balance at beginning of period | 64,615 | 87,571
Additions | 1,896 | 18,101
Payments made (received) | (1,629) | (13,421)
Amortization | (12,007) | (28,722)
Accretion, Carrying Amount of Loans | 414 | 1,086
Balance at end of period | 53,289 | 64,615
Acquired Impaired Assets [Member] |  |
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward] |  |
Balance at beginning of period, AccretableYield | 78,277 | 50,902
Balance at beginning of period, Carrying Amount of Loans | 138,091 | 74,953
Additions, AccretableYield |  | 43,299
Additions, Carrying Amount of Loans |  | 107,946
Reclassification from nonaccretable balance, net, AccretableYield | 5,885 | 17,850
Reclassification from nonaccretable balance, net, Carrying Amount of Loans | (2,069) | 0
Accretion, AccretableYield | (15,655) | (33,774)
Transfers to REO, AccretableYield | 0 | 0
Transfers to REO, Carrying Amount of Loans | (678) | (11,196)
Payments received, net, AccretableYield | 0 | 0
Payments received, net, Carrying Amount of Loans | (50,394) | (67,386)
Balance at end of period, AccretableYield | 68,507 | 78,277
Balance at end of period, Carrying Amount of Loans | 100,605 | 138,091
FDIC Indemnification Asset Movement Analysis [Roll Forward] |  |
Accretion, Carrying Amount of Loans | 15,655 | 33,774
Acquired Non Impaired Assets [Member] |  |
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward] |  |
Balance at beginning of period, AccretableYield | 17,263 | 23,789
Balance at beginning of period, Carrying Amount of Loans | 157,856 | 213,423
Additions, AccretableYield |  | 0
Additions, Carrying Amount of Loans |  | 0
Reclassification from nonaccretable balance, net, AccretableYield | 0 | 0
Reclassification from nonaccretable balance, net, Carrying Amount of Loans | 0 | 0
Accretion, AccretableYield | (3,475) | (6,526)
Transfers to REO, AccretableYield | 0 | 0
Transfers to REO, Carrying Amount of Loans | 0 | 0
Payments received, net, AccretableYield | 0 | 0
Payments received, net, Carrying Amount of Loans | (32,331) | (62,093)
Balance at end of period, AccretableYield | 13,788 | 17,263
Balance at end of period, Carrying Amount of Loans | 129,000 | 157,856
FDIC Indemnification Asset Movement Analysis [Roll Forward] |  |
Accretion, Carrying Amount of Loans | $ 3,475 | $ 6,526

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- Definition Amount of the excess of a loan's cash flows expected to be collected over the investor's initial investment in acquired loans not accounted for as debt securities with evidence of deterioration of credit quality. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 15 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=27045933&loc=d3e13503-111538 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=6379141&loc=d3e15032-111544 + Details
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- Definition Amount of decrease from accretion of the excess of a loan's cash flows expected to be collected over the investor's initial investment in acquired loans not accounted for as debt securities with evidence of deterioration of credit quality. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 15 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=27045933&loc=d3e13503-111538 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=6379141&loc=d3e15032-111544 + Details
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- Definition Amount of additions to the excess of a loan's cash flows expected to be collected over the investor's initial investment in acquired loans not accounted for as debt securities with evidence of deterioration of credit quality. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 15 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=27045933&loc=d3e13503-111538 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=6379141&loc=d3e15032-111544 + Details
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- Definition Amount of increase of reclassification from nonaccretable difference to the excess of a loan's cash flows expected to be collected over the investor's initial investment in acquired loans not accounted for as debt securities with evidence of deterioration of credit quality. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 15 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=27045933&loc=d3e13503-111538 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=6379141&loc=d3e15032-111544 + Details
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- Definition The recorded balance, net of any applicable reductions (for example, unamortized accretable yield and allowance for loan losses). This relates to loans not accounted for debt securities with evidence of deterioration of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 15 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=27045933&loc=d3e13503-111538 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6379141&loc=d3e15032-111544 + Details
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