Significant Concentrations of Credit Risk (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 30, 2013 certificate_of_deposit
Concentration Risk [Line Items]
Loans secured by real estate	$ 555,997
Undisbursed construction loan proceeds	18,527
Loans secured by real estate, percentage of total portfolio	95.90%
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	30,042
Number of Certificates of Deposit	1
FHLB Seattle
Concentration Risk [Line Items]
CDs held for investment	$ 2,500