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Significant Concentrations of Credit Risk (Details)
$ in Thousands
12 Months Ended
Sep. 30, 2015
USD ($)
Risks and Uncertainties [Abstract]  
Loans secured by real estate $ 634,470
Undisbursed construction loan proceeds $ 53,457
Loans secured by real estate, percentage of total portfolio 94.30%
Concentration of credit risk, real estate loans by industry, benchmark percentage 20.00%
Ratio of loans to appraisal or purchase price 90.00%
CDs held for investment $ 48,611