Corporate Organization and Company Overview (Details) $ / shares in Units, $ in Thousands		1 Months Ended		3 Months Ended		9 Months Ended
	Jul. 27, 2018 USD ($) $ / shares shares	Aug. 31, 2018 USD ($) $ / shares shares	Apr. 30, 2018 $ / shares shares	Sep. 30, 2018 shares	Mar. 31, 2018 shares	Sep. 30, 2019 USD ($) $ / shares shares	Sep. 30, 2018 USD ($)	Dec. 31, 2018 $ / shares shares	Jun. 30, 2018 shares
Corporate Conversion, Reorganization, Stock Splits and IPO [Abstract]
Common stock, shares issued (in shares)						25,042,964		24,957,309
Conversion ratio, stock			0.08
Common stock, shares authorized (in shares)			350,000,000		25,000	250,000,000		250,000,000
Common stock, par value (in dollars per share) | $ / shares						$ 0.001		$ 0.001
Initial Public Offering of Common Stock [Abstract]
Share price (in dollars per share) | $ / shares						$ 15.00
Net proceeds from initial public offering | $		$ 63,482				$ 0	$ 68,714
Common stock, shares outstanding (in shares)						25,042,964		24,957,309
Initial Public Offering [Member]
Initial Public Offering of Common Stock [Abstract]
Number of common shares issued (in shares)	4,500,000
Share price (in dollars per share) | $ / shares	$ 15.00
Net proceeds from initial public offering | $	$ 57,543
Stock issuance costs | $	$ 9,957
Over-Allotment Option [Member]
Initial Public Offering of Common Stock [Abstract]
Number of common shares issued (in shares)		425,727
Share price (in dollars per share) | $ / shares		$ 15.00
Net proceeds from initial public offering | $		$ 5,939
Stock issuance costs | $		$ 447
Voting Common Stock [Member]
Corporate Conversion, Reorganization, Stock Splits and IPO [Abstract]
Common stock, par value (in dollars per share) | $ / shares			$ 0.001
Effect of stock split (in shares)			37,212
Nonvoting Common Stock [Member]
Initial Public Offering of Common Stock [Abstract]
Common stock, shares outstanding (in shares)									4,922,353
Aquestive Partners, LLC [Member] | Voting Common Stock [Member]
Corporate Conversion, Reorganization, Stock Splits and IPO [Abstract]
Common stock, shares issued (in shares)						5,000
Common Stock [Member]
Corporate Conversion, Reorganization, Stock Splits and IPO [Abstract]
Common stock, par value (in dollars per share) | $ / shares			$ 0.001
Effect of stock split (in shares)					15,072,647
Initial Public Offering of Common Stock [Abstract]
Number of common shares issued (in shares)				4,925,727