Effective income tax rate reconciliation nondeductible expense merger expenses.

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Income tax reconciliation nondeductible expense merger expenses.

+ References

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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-Name Accounting Standards Codification

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to changes in the valuation allowance for deferred tax assets.

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to tax credits. Including, but not limited to, research credit, foreign tax credit, investment tax credit, and other tax credits.

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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-Glossary Income Tax Expense (or Benefit)

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to increase (decrease) in the valuation allowance for deferred tax assets.

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The amount of income tax expense or benefit for the period computed by applying the domestic federal statutory tax rates to pretax income from continuing operations.

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to tax credits. Including, but not limited to, research credit, foreign tax credit, investment tax credit, and other tax credits.

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Income Taxes - Schedule of Reconciliation of the Federal Statutory Rate and the Effective Income Tax Rate (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2012
Income Tax Disclosure [Abstract]
Provision at statutory rate, Amount									$ 3,874	$ 3,963	$ 84
Valuation allowance, Amount											247
Income from bank-owned life insurance, Amount									(314)	(322)	(274)
Tax-exempt income, Amount									(536)	(388)	(310)
Low-income housing credits, Amount									(140)	(289)	(195)
Nondeductible merger expenses, Amount											163
Other, net, Amount									7	(130)	318
Actual tax expense and effective rate, Amount	$ 745us-gaap_IncomeTaxExpenseBenefit	$ 976us-gaap_IncomeTaxExpenseBenefit	$ 554us-gaap_IncomeTaxExpenseBenefit	$ 616us-gaap_IncomeTaxExpenseBenefit	$ 292us-gaap_IncomeTaxExpenseBenefit	$ 519us-gaap_IncomeTaxExpenseBenefit	$ 662us-gaap_IncomeTaxExpenseBenefit	$ 1,361us-gaap_IncomeTaxExpenseBenefit	$ 2,891us-gaap_IncomeTaxExpenseBenefit	$ 2,834us-gaap_IncomeTaxExpenseBenefit	$ 33us-gaap_IncomeTaxExpenseBenefit
Provision at statutory rate, Percentage of pretax income									34.00%	34.00%	34.00%
Valuation allowance, Percentage of pretax income											99.60%
Income from bank-owned life insurance, Percentage of pretax income									(2.80%)	(2.80%)	(110.70%)
Tax-exempt income, Percentage of pretax income									(4.70%)	(3.30%)	(125.50%)
Low-income housing credits, Percentage of pretax income									(1.20%)	(2.50%)	(78.70%)
Nondeductible merger expenses, Percentage of pretax income											65.80%
Other, net, Percentage of pretax income									0.10%	(1.10%)	128.80%
Actual tax expense and effective rate, Percentage of pretax income									25.40%	24.30%	13.30%