| Cover | Mar. 24, 2022 |
| Cover [Abstract] | |
| Entity Registrant Name | Timberline Resources Corporation |
| Entity Central Index Key | 0001288750 |
| Document Type | 8-K |
| Amendment Flag | false |
| Entity Emerging Growth Company | false |
| Document Period End Date | Mar. 24, 2022 |
| Entity File Number | 001-34055 |
| Entity Incorporation State Country Code | DE |
| Entity Tax Identification Number | 82-0291227 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Entity Address State Or Province | ID |
| Entity Address Postal Zip Code | 83814 |
| City Area Code | 208 |
| Local Phone Number | 664-4859 |
| Security 12b Title | Common Stock, $0.001 par value |
| Trading Symbol | TLRS |
| Entity Address Address Line 1 | 101 East Lakeside AvenueCoeur d’Alene |
