Timberland Bancorp, Inc. and Subsidiary Condensed Consolidated Statements of Shareholders' Equity (Unaudited) (USD $) In Thousands, except Share data, unless otherwise specified	Total		MRDP Stock		Stock Options	Preferred Stock	Common Stock		Common Stock MRDP Stock		Common Stock Stock Options	Unearned Shares Issued to ESOP	Retained Earnings	Accumulated Other Compre- hensive Loss
Balance at beginning of period - amount at Sep. 30, 2013
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 5,850												$ 5,850
Preferred stock discount accretion						70							(70)
Redemption of preferred stock - shares						(12,065)
Redemption of preferred stock - amount	(12,065)					(12,006)							(59)
5% preferred stock dividend	(58)												(58)
Common stock dividends ($0.05 per common share)	(1,127)												(1,127)
Earned ESOP shares, net of tax	328						64					264
Stock option/MRDP compensation expense	0	[1]	4	[1]	112		0	[1]	4	[1]	112
Unrealized holding loss on investment securities available for sale, net of tax	(63)													(63)
Change in OTTI on investment securities held to maturity, net of tax	34													34
Accretion of OTTI on investment securities held to maturity, net of tax	(52)													(52)
Balance at end of period - amount at Sep. 30, 2014	82,778					0	10,773					(1,190)	73,534	(339)
Balance at end of period - shares at Sep. 30, 2014						0	7,047,336
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	1,727												1,727
Preferred stock discount accretion	0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period							5,300
Stock Issued During Period, Value, Stock Options Exercised	25						25
Common stock dividends ($0.05 per common share)	(352)												(352)
Earned ESOP shares, net of tax	84						18					66
Stock option/MRDP compensation expense	46	[1]			30		46	[1]			30
Unrealized holding loss on investment securities available for sale, net of tax	(33)													(33)
Accretion (Amortization) of Discounts and Premiums, Investments	8													8
Balance at end of period - amount at Dec. 31, 2014	$ 84,267					$ 0	$ 10,846					$ (1,124)	$ 74,909	$ (364)
Balance at end of period - shares at Dec. 31, 2014						0	7,052,636

[1] 1998 Management Recognition and Development Plan (“MRDP”).