| Cover | Feb. 24, 2022 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Feb. 24, 2022 |
| Entity File Number | 001-38599 |
| Entity Registrant Name | Aquestive Therapeutics, Inc. |
| Entity Central Index Key | 0001398733 |
| Entity Tax Identification Number | 82-3827296 |
| Entity Incorporation, State or Country Code | DE |
| Entity Address, Address Line One | 30 Technology Drive |
| Entity Address, City or Town | Warren |
| Entity Address, State or Province | NJ |
| Entity Address, Postal Zip Code | 07059 |
| City Area Code | 908 |
| Local Phone Number | 941-1900 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common Stock, par value $0.001 per share |
| Trading Symbol | AQST |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | true |
| Elected Not To Use the Extended Transition Period | false |
