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Timberland Bancorp, Inc. and Subsidiary Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($)
$ in Thousands
Dec. 31, 2015
Sep. 30, 2015
Statement of Financial Position [Abstract]    
Mortgage-backed securities and other investments held to maturity-fair value $ 8,685 $ 8,894
Preferred stock par value (in dollars per share) $ 0 $ 0
Preferred stock shares authorized 0 0
Preferred stock shares issued 0 0
Preferred stock shares outstanding 0 0
Preferred stock per share liquidation value (in dollars per share) $ 1,000 $ 1,000
Common stock par value (in dollars per share) $ 0.01 $ 0.01
Common stock shares authorized 50,000,000 50,000,000
Common stock shares issued 7,053,636 7,053,636
Common stock shares outstanding 7,053,636 7,053,636