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Cover - shares
 9 Months Ended
Sep. 30, 2025
Nov. 03, 2025
Cover [Abstract]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Sep. 30, 2025  
Document Transition Report false  
Entity File Number 001-38599  
Entity Registrant Name Aquestive Therapeutics, Inc.  
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  
Entity Tax Identification Number 82-3827296  
City Area Code 908  
Local Phone Number 941-1900  
Title of 12(b) Security Common Stock, par value $0.001 per share  
Trading Symbol AQST  
Security Exchange Name NASDAQ  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Non-accelerated Filer  
Entity Small Business true  
Entity Emerging Growth Company false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   122,003,113
Entity Central Index Key 0001398733  
Current Fiscal Year End Date --12-31  
Document Fiscal Year Focus 2025  
Document Fiscal Period Focus Q3  
Amendment Flag false