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Corporate Organization and Company Overview (Details) $ / shares in Units, $ in Thousands			1 Months Ended			3 Months Ended	9 Months Ended		12 Months Ended
	Aug. 15, 2018 USD ($) $ / shares shares	Jul. 27, 2018 USD ($) $ / shares shares	Aug. 15, 2018 USD ($) $ / shares	Jul. 31, 2018 $ / shares shares	Apr. 30, 2018 $ / shares shares	Jun. 30, 2018 shares	Sep. 30, 2018 USD ($) $ / shares shares	Sep. 30, 2017 USD ($)	Dec. 31, 2017 shares	Mar. 31, 2018 shares
Number of Redeemable and Non-redeemable Interests Outstanding [Abstract]
Number of redeemable and non-redeemable interests outstanding (in shares)									246,768,153
Corporate Conversion, Reorganization, Stock Splits and IPO [Abstract]
Common stock, shares issued (in shares)							24,942,185
Conversion ratio for redeemable and non-redeemable stock									1
Common stock, shares authorized (in shares)		250,000,000			350,000,000		250,000,000			25,000
Common stock, par value (in dollars per share) | $ / shares				$ 0.001			$ 0.001
Reverse stock split (in shares)				12.34
Initial Public Offering of Common Stock and Authorized Number of Capital Stock [Abstract]
Share price (in dollars per share) | $ / shares							$ 15.00
Net proceeds from initial public offering | $			$ 63,484				$ 68,714	$ 0
Payments for deferred offering costs | $							$ (4,695)	$ (43)
Common stock, shares outstanding (in shares)							24,942,185
Initial Public Offering [Member]
Initial Public Offering of Common Stock and Authorized Number of Capital 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 | $		$ 57,545
Payments for deferred offering costs | $		$ (9,955)
Over-Allotment Option [Member]
Initial Public Offering of Common Stock and Authorized Number of Capital Stock [Abstract]
Number of common shares issued (in shares)	425,727
Share price (in dollars per share) | $ / shares	$ 15.00		$ 15.00
Net proceeds from initial public offering | $	$ 5,939
Payments for deferred offering costs | $	$ (447)
Redeemable Preferred A-3 Interests [Member]
Number of Redeemable and Non-redeemable Interests Outstanding [Abstract]
Number of redeemable and non-redeemable interests outstanding (in shares)									5,055,000
Redeemable Preferred A-2 Interests [Member]
Number of Redeemable and Non-redeemable Interests Outstanding [Abstract]
Number of redeemable and non-redeemable interests outstanding (in shares)									82,071,200
Nonredeemable A-1 Interests [Member]
Number of Redeemable and Non-redeemable Interests Outstanding [Abstract]
Number of redeemable and non-redeemable interests outstanding (in shares)									21,526,850
Nonredeemable A Interests [Member]
Number of Redeemable and Non-redeemable Interests Outstanding [Abstract]
Number of redeemable and non-redeemable interests outstanding (in shares)									16,886,750
Common Interests [Member]
Number of Redeemable and Non-redeemable Interests Outstanding [Abstract]
Number of redeemable and non-redeemable interests outstanding (in shares)									121,228,353
Voting Common Stock [Member]
Corporate Conversion, Reorganization, Stock Splits and IPO [Abstract]
Common stock, par value (in dollars per share) | $ / shares					$ 0.001
Affect of stock split (unaudited) (in shares)					37,212
Nonvoting Common Stock [Member]
Initial Public Offering of Common Stock and Authorized Number of Capital Stock [Abstract]
Number of common shares issued (in shares)						4,922,353
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

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