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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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