Fair Value Measurements and Fair Value of Financial Instruments - Fair Value Inputs, Assets, Quantitative Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		12 Months Ended
	Sep. 30, 2014		Jun. 30, 2014
Impaired loans [Member]
Fair value inputs assets, quantitative information [Line Items]
Fair value	$ 3,268		$ 3,527
Impaired loans [Member] | Nonrecurring [Member] | Appraisal of Collateral [Member]
Fair value inputs assets, quantitative information [Line Items]
Fair value	3,268	[1]	3,527	[1]
Impaired loans [Member] | Nonrecurring [Member] | Appraisal of Collateral [Member] | Minimum [Member]
Fair value inputs [Abstract]
Appraisal adjustments (in hundredths)	0.00%	[1],[2]	0.00%	[1],[2]
Liquidation expenses (in hundredths)	0.00%	[1],[3]	0.00%	[1],[3]
Impaired loans [Member] | Nonrecurring [Member] | Appraisal of Collateral [Member] | Maximum [Member]
Fair value inputs [Abstract]
Appraisal adjustments (in hundredths)	38.85%	[1],[2]	38.85%	[1],[2]
Liquidation expenses (in hundredths)	9.22%	[1],[3]	9.22%	[1],[3]
Impaired loans [Member] | Nonrecurring [Member] | Appraisal of Collateral [Member] | Weighted Average [Member]
Fair value inputs [Abstract]
Appraisal adjustments (in hundredths)	13.44%	[1],[2]	15.26%	[1],[2]
Liquidation expenses (in hundredths)	3.96%	[1],[3]	3.82%	[1],[3]
Foreclosed real estate [Member]
Fair value inputs assets, quantitative information [Line Items]
Fair value	245		382
Foreclosed real estate [Member] | Nonrecurring [Member] | Appraisal of Collateral [Member]
Fair value inputs assets, quantitative information [Line Items]
Fair value	$ 245	[1]	$ 382	[1]
Foreclosed real estate [Member] | Nonrecurring [Member] | Appraisal of Collateral [Member] | Minimum [Member]
Fair value inputs [Abstract]
Appraisal adjustments (in hundredths)	7.41%	[1],[2]	9.30%	[1],[2]
Liquidation expenses (in hundredths)	7.59%	[1],[3]	6.00%	[1],[3]
Foreclosed real estate [Member] | Nonrecurring [Member] | Appraisal of Collateral [Member] | Maximum [Member]
Fair value inputs [Abstract]
Appraisal adjustments (in hundredths)	19.00%	[1],[2]	19.00%	[1],[2]
Liquidation expenses (in hundredths)	10.86%	[1],[3]	10.86%	[1],[3]
Foreclosed real estate [Member] | Nonrecurring [Member] | Appraisal of Collateral [Member] | Weighted Average [Member]
Fair value inputs [Abstract]
Appraisal adjustments (in hundredths)	10.72%	[1],[2]	12.18%	[1],[2]
Liquidation expenses (in hundredths)	8.52%	[1],[3]	7.95%	[1],[3]

[1] Fair value is generally determined through independent third-party appraisals of the underlying collateral, which generally includes various Level 3 inputs which are not observable.

[2] Appraisals may be adjusted downwards by management for qualitative factors such as economic conditions. Higher downward adjustments are caused by negative changes to the collateral or conditions in the real estate market, actual offers or sales contracts received or age of the appraisal.

[3] Appraisals may be adjusted downwards by management for qualitative factors such as the estimated costs to liquidate the collateral.