| Cover Page | Nov. 07, 2019 |
| Cover page. | |
| Document Type | 8-K |
| Document Period End Date | Nov. 7, 2019 |
| Entity Registrant Name | NAUTILUS, INC. |
| Entity Incorporation, State or Country Code | WA |
| Entity File Number | 001-31321 |
| Entity Tax Identification Number | 94-3002667 |
| Entity Address, Address Line One | 17750 S.E. 6th Way |
| Entity Address, City or Town | Vancouver |
| Entity Address, State or Province | WA |
| Entity Address, Postal Zip Code | 98683 |
| City Area Code | (360) |
| Local Phone Number | 859-2900 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common Stock, no par value |
| Trading Symbol | NLS |
| Security Exchange Name | NYSE |
| Entity Emerging Growth Company | false |
| Entity Central Index Key | 0001078207 |
| Amendment Flag | false |
