Investment Securities (Details 3) - USD ($) $ in Thousands	Dec. 31, 2016	Sep. 30, 2016
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]
Due in one year or less	$ 230	$ 230
Due after one year through five years	11,720	14,463
Due after five years through ten years	30,432	28,289
Due after ten years	40,506	36,118
Amortized Cost	82,888	79,100
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]
Due in one year or less	230	230
Due after one year through five years	11,568	14,546
Due after five years through ten years	29,661	28,798
Due after ten years	39,677	36,549
Estimated Fair Value	$ 81,136	$ 80,123