Fair Value of Financial Instruments and Fair Value Measurement - Quantitative Information about Level 3 Fair Value Measurements (Details) (USD $)	6 Months Ended
Mar. 31, 2015	Sep. 30, 2014
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Assets held for sale	$ 1,744,584	$ 1,744,584
Impaired loans
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Impaired loans	2,579,119
Valuation techniques	Property appraisals
Unobservable input	Management discount for property type and recent market volatility
Weighted average discount rate	31.00%
Other real estate owned
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Other real estate owned	4,487,496
Valuation techniques	Property appraisals
Unobservable input	Management discount for property type and recent market volatility
Weighted average discount rate	29.00%
Assets held-for-sale
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Assets held for sale	$ 1,744,584
Valuation techniques	Valuation analysis
Unobservable input	Management discount for property type and recent market volatility
Weighted average discount rate	34.00%
Minimum \| Impaired loans
Fair Value Inputs, Assets, Quantitative Information [Line Items]
General range discount	19.00%
Minimum \| Other real estate owned
Fair Value Inputs, Assets, Quantitative Information [Line Items]
General range discount	20.00%
Minimum \| Assets held-for-sale
Fair Value Inputs, Assets, Quantitative Information [Line Items]
General range discount	0.00%
Maximum \| Impaired loans
Fair Value Inputs, Assets, Quantitative Information [Line Items]
General range discount	50.00%
Maximum \| Other real estate owned
Fair Value Inputs, Assets, Quantitative Information [Line Items]
General range discount	47.00%
Maximum \| Assets held-for-sale
Fair Value Inputs, Assets, Quantitative Information [Line Items]
General range discount	50.00%

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+ References

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- Definition

Fair value portion of assets classified as held for sale.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19190-110258

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Interest rate used to find the present value of an amount to be paid or received in the future as an input to measure fair value. For example, but not limited to, weighted average cost of capital (WACC), cost of capital, cost of equity and cost of debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

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Description of the inputs and valuation technique(s) used to measure fair value.

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Carrying amount of other real estate not separately disclosed, including, but not limited to, real estate investments, real estate loans that qualify as investments in real estate, and premises that are no longer used in operations may also be included in real estate owned. This does not include real estate assets taken in settlement of troubled loans through surrender or foreclosure.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.10(4))

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