Fair Value Measurements and Fair Value of Financial Instruments - Fair Value Inputs, Assets, Quantitative Information (Details) (Impaired loans [Member], USD $) In Thousands, unless otherwise specified	3 Months Ended		12 Months Ended
	Sep. 30, 2013		Jun. 30, 2013
Fair value inputs assets, quantitative information [Line Items]
Loans receivable, fair value nonrecurring	$ 4,558		$ 5,460
Nonrecurring [Member] | Appraisal of Collateral [Member]
Fair value inputs assets, quantitative information [Line Items]
Loans receivable, fair value nonrecurring	$ 4,558	[1]	$ 5,460	[1]
Nonrecurring [Member] | Appraisal of Collateral [Member] | Minimum [Member]
Fair value inputs [Abstract]
Appraisal adjustments (in hundredths)	3.85%	[1],[2]	4.00%	[1],[2]
Liquidation expenses (in hundredths)	4.09%	[1],[3]	3.49%	[1],[3]
Nonrecurring [Member] | Appraisal of Collateral [Member] | Maximum [Member]
Fair value inputs [Abstract]
Appraisal adjustments (in hundredths)	41.74%	[1],[2]	41.74%	[1],[2]
Liquidation expenses (in hundredths)	9.35%	[1],[3]	9.52%	[1],[3]
Nonrecurring [Member] | Appraisal of Collateral [Member] | Weighted Average [Member]
Fair value inputs [Abstract]
Appraisal adjustments (in hundredths)	25.51%	[1],[2]	23.98%	[1],[2]
Liquidation expenses (in hundredths)	5.74%	[1],[3]	5.86%	[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.