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Summary of Significant Accounting Policies (Tables)

12 Months Ended

Sep. 30, 2016

Accounting Policies [Abstract]

Schedule of goodwill and intangible assets

The table below provides detail regarding the Company's intangible assets.

	Goodwill				Core Deposit Intangible				Total
	(In thousands)
Balance at September 30, 2014	$	291,503			$	11,406			$	302,909
Amortization	—				(3,551		)		(3,551		)
Balance at September 30, 2015	291,503				7,855				299,358
Amortization	—				(2,369		)		(2,369		)
Balance at September 30, 2016	$	291,503			$	5,486			$	296,989

Schedule of future amortization expense

The table below presents the estimated core deposit intangible asset amortization expense for the next five years.

Fiscal Year		Expense
		(In thousands)
2017		$	1,648
2018		1,204
2019		1,157
2020		1,157
2021		320

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Tabular disclosure of the amount of amortization expense expected to be recorded in succeeding fiscal years for finite-lived intangible assets.

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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=66006027&loc=d3e16323-109275

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Schedule of Goodwill and Finite Lived Intangible Assets [Table Text Block]

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