| Cover | Oct. 22, 2020 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Document Period End Date | Oct. 22, 2020 |
| Entity Registrant Name | OPTINOSE, INC. |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 001-38241 |
| Entity Tax Identification Number | 42-1771610 |
| Entity Address, Address Line One | 1020 Stony Hill Road |
| Entity Address, Address Line Two | Suite 300 |
| Entity Address, City or Town | Yardley |
| Entity Address, State or Province | PA |
| Entity Address, Postal Zip Code | 19067 |
| City Area Code | 267 |
| Local Phone Number | 364-3500 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | true |
| Entity Ex Transition Period | true |
| Title of 12(b) Security | Common stock, par value $0.001 per share |
| Trading Symbol | OPTN |
| Security Exchange Name | NASDAQ |
| Entity Central Index Key | 0001494650 |
| Amendment Flag | false |
