Document and Entity Information - USD ($)	12 Months Ended
	Sep. 30, 2015	Dec. 21, 2015	Mar. 31, 2015
Document and Entity Information
Entity Registrant Name	Timberline Resources Corporation
Document Type	10-K
Document Period End Date	Sep. 30, 2015
Amendment Flag	false
Entity Central Index Key	0001288750
Current Fiscal Year End Date	--09-30
Entity Common Stock, Shares Outstanding		13,331,945
Entity Filer Category	Smaller Reporting Company
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Well-known Seasoned Issuer	No
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	FY
Entity Public Float			$ 6,182,388
Trading Symbol	tlr