Goodwill (Details) (USD $)	Jun. 30, 2013	Sep. 30, 2012	May 31, 2012
Goodwill [Line Items]
Goodwill, fair value			$ 45,000,000
Goodwill	5,650,000	5,650,000	5,700,000
Goodwill, percentage by which fair value exceeds carrying value			689.00%
Expected control premium			30.00%
Annual growth rate			3.00%
Discount rate			15.00%
Terminal value			110.00%
Goodwill, amountby which fair value exceeds carrying value			39,300,000
Special Mention or Substandard
Goodwill [Line Items]
Loans receivable, discount rate			25.00%
Nonperforming Loans
Goodwill [Line Items]
Loans receivable, discount rate			50.00%
Corporate Value Approach
Goodwill [Line Items]
Fair value of reporting unit			89,000,000
Income Approach
Goodwill [Line Items]
Fair value of reporting unit			82,000,000
Market Approach
Goodwill [Line Items]
Fair value of reporting unit			96,000,000
Minimum
Goodwill [Line Items]
Return on assets			0.54%
Maximum
Goodwill [Line Items]
Return on assets			1.01%
Average
Goodwill [Line Items]
Return on assets			0.73%
Fair value of reporting unit			$ 87,000,000