Fair Value Measurement: Level 3 Fair Value Measurements, Nonrecurring (Details) (USD $)	12 Months Ended
	Sep. 30, 2013	Sep. 30, 2013 Nonrecurring	Sep. 30, 2012 Nonrecurring	Sep. 30, 2013 Nonrecurring Impaired loans	Sep. 30, 2012 Nonrecurring Impaired loans	Sep. 30, 2013 Nonrecurring Fair Value, Inputs, Level 3	Sep. 30, 2012 Nonrecurring Fair Value, Inputs, Level 3	Sep. 30, 2013 Nonrecurring Fair Value, Inputs, Level 3 Impaired loans	Sep. 30, 2012 Nonrecurring Fair Value, Inputs, Level 3 Impaired loans	Sep. 30, 2013 Nonrecurring Fair Value, Inputs, Level 3 Impaired loans Market approach	Sep. 30, 2013 Nonrecurring Fair Value, Inputs, Level 3 Other real estate owned Market approach
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Assets, estimated fair value, nonrecurring		$ 6,036,000	$ 4,099,000	$ 3,927,000	$ 2,988,000	$ 34,290,000	$ 36,384,000	$ 22,570,000	$ 21,071,000	$ 22,570,000	$ 11,720,000
FHLB stock, shares redeemed during period	2,028