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Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Sep. 30, 2014
Accounting Policies [Abstract] |
Schedule of goodwill and intangible assets | The balance of the Company's intangible assets was as follows, which includes the additional goodwill discussed above:
| Goodwill |  | Servicing Rights Intangible |  | Core Deposit Intangible |  | Total
| (In thousands)
Balance at September 30, 2012 | $ | 251,653 |  |  | $ | 286 |  |  | $ | 4,137 |  |  | $ | 256,076 |
Additions | 8,624 |  |  | — |  |  | 1,433 |  |  | 10,057 |
Amortization | — |  |  | (286 | ) |  | (1,529 | ) |  | (1,815 | )
Balance at September 30, 2013 | 260,277 |  |  | — |  |  | 4,041 |  |  | 264,318 |
Additions | 31,226 |  |  | — |  |  | 11,040 |  |  | 42,266 |
Amortization | — |  |  | — |  |  | (3,675 | ) |  | (3,675 | )
Balance at September 30, 2014 | $ | 291,503 |  |  | $ | — |  |  | $ | 11,406 |  |  | $ | 302,909 |
Schedule of future amortization expense | The table below presents the estimated core deposit intangible asset amortization expense for the next five years:
Year End |  | Expense
|  | (In thousands)
2015 |  | $ | 3,479 |
2016 |  | 2,314 |
2017 |  | 1,607 |
2018 |  | 1,208 |
2019 |  | 1,254 |

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- Definition Tabular disclosure of the amount of amortization expense expected to be recorded in succeeding fiscal years for finite-lived intangible assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition Schedule of Goodwill and Finite Lived Intangible Assets [Table Text Block] + References No definition available. + Details
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