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Timberland Bancorp, inc. and Subsidiary Condensed Consolidated Statements of Shareholders' Equity (Parentheticals) - $ / shares
3 Months Ended 12 Months Ended
Dec. 31, 2015
Sep. 30, 2015
Preferred Stock    
Preferred stock, dividend rate (percent) 0.00% 0.00%
Common Stock    
Common stock dividends (in dollars per share) $ 0.06