Fair Value Accounting (Details 2) - Fair Value, Measurements, Nonrecurring - USD ($) $ in Thousands	Dec. 31, 2015	Sep. 30, 2015
Assets Measured on a Nonrecurring Basis
Foreclosed and repossessed assets, net	$ 804	$ 902
Impaired loans with allocated allowances	1,752	2,349
Total	2,556	3,251
Quoted Prices in Active Markets for Identical Instruments (Level 1)
Assets Measured on a Nonrecurring Basis
Foreclosed and repossessed assets, net	0
Impaired loans with allocated allowances	0
Total	0
Significant Other Observable Inputs (Level 2)
Assets Measured on a Nonrecurring Basis
Foreclosed and repossessed assets, net	0	0
Impaired loans with allocated allowances	0	0
Total	0	0
Significant Unobservable Inputs (Level 3)
Assets Measured on a Nonrecurring Basis
Foreclosed and repossessed assets, net	804	902
Impaired loans with allocated allowances	1,752	2,349
Total	$ 2,556	$ 3,251