Federal Home Loan Bank Advances (Details) (USD $)	3 Months Ended
	Dec. 31, 2012	Dec. 31, 2014	Dec. 31, 2013
Federal Home Loan Bank Advances [Abstract]
Collateral under borrowing agreements with FHLB		$ 1,300,000
Federal home loan bank advances		195,386,000	90,479,000
Remaining discount on Federal home loan bank advances		91,000	158,000
Scheduled Maturities [Abstract]
2013		180,000,000
2014		15,000,000
2015		0
2016		8,059
2017		0
Thereafter		377,869
Federal home loan bank advances, Total		195,385,928
Weighted average interest rates [Abstract]
2015 (in hundredths)		0.16%
2016 (in hundredths)		0.18%
2017 (in hundredths)		0.00%
2018 (in hundredths)		2.00%
2019 (in hundredths)		0.00%
Thereafter (in hundredths)		2.43%
Weighted average interest rate (in hundredths)		0.17%
Amount of advances of FHLB			35,000,000
Restructuring of one-time charge	877,000
Weighted average interest rate of advances of FHLB (in hundredths)			1.79%
Borrowing availability with FHLB, federal reserve bank discount window and other correspondent banks		$ 2,500,000,000