Summary of Significant Accounting Policies	3 Months Ended
Mar. 31, 2019
Summary of Significant Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Note 3. Summary of Significant Accounting Policies (A) Principles of Consolidation The interim condensed consolidated financial statements presented herein include the accounts of Aquestive Therapeutics, Inc. and its wholly owned subsidiary, MonoSol Rx, Inc. Other than corporate formation activities, MonoSol Rx, Inc. has conducted no commercial, developmental or operational activities and has no customers or vendors. The results of operations and cash flows reported in these condensed consolidated financial statements should not be regarded as necessarily indicative of results that may be expected in any other interim period or for the entire fiscal year. (B) Use of Estimates The preparation of financial statements in conformity with U.S. GAAP requires the use of estimates and assumptions that affect the reported amounts of assets and liabilities, including disclosure of contingent assets and contingent liabilities, at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Significant items subject to estimates and assumptions include allowances for rebates from proprietary product sales, the allowance for sales returns, the useful lives of fixed assets, valuation of share-based compensation, and contingencies. (C) Recent Accounting Pronouncements As an emerging growth company, the Company has elected to take advantage of the extended transition period afforded by the Jumpstart Our Business Startups Act for the implementation of new or revised accounting standards and, as a result, the Company will comply with new or revised accounting standards no later than the relevant dates on which adoption of such standards is required for emerging growth companies. The Company believes that the impact of recently issued standards that are not yet effective will not have a material impact on its financial position or results of operations upon adoption. In May 2014, the FASB, issued ASU 2014-09, Revenue from Contracts with Customers, and subsequently issued a number of amendments to this update. The new standard, as amended in Accounting Standards Codification, or ASC 606, provides a single comprehensive model to be used in accounting for revenue arising from contracts with customers and supersedes previous revenue recognition guidance. The standard’s core principle is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. In addition, the standard requires disclosure of the nature, amount, timing and uncertainty of revenue and cash flows arising from contracts with customers. The Company adopted this standard on January 1, 2019, using the modified retrospective method and recorded a cumulative effect adjustment of $2,832 to increase the opening balance of accumulated deficit. The impact was primarily related to deferral of a portion of the original upfront and milestone payments of its collaborative licensing arrangements resulting in a deferral of $3,100 of previously recognized revenue as of the adoption date. The cumulative adjustment also reflects $151 net acceleration of revenue related to feasibility and development arrangements with its customers and acceleration of $117 of revenue recognition of its manufacturing and supply product sales. Under the modified retrospective method of adoption, the comparative information in the consolidated financial statements have not been revised and continues to be reported under the previously applicable revenue accounting guidance, ASC 605. If ASC 605 had been applied to the first quarter of 2019, deferred revenue would have been $2,683 lower on the condensed consolidated balance sheet, with $278 lower in current portion of deferred revenue and $2,405 Deferred revenue, net of current portion. For additional information regarding the Company’s revenue, see Note 5, Revenues and Trade Receivables, Net In June 2018, the FASB issued ASU 2018-07, Compensation – Stock Compensation (Topic 718): Improvements to Non-Employee Share-Based Payment Accounting, which more closely aligns accounting for share-based payments to nonemployees to that of employees under existing guidance of Topic 718. This guidance supersedes previous guidance provided by Subtopic 505-50, Equity – Equity-Based Payments to Non-Employees. The Company adopted the new standard effective January 1, 2019 and recorded a cumulative effect adjustment of $20 to its Accumulated deficit upon adoption. In January 2016, the FASB issued revised guidance governing accounting and reporting of financial instruments (ASU 2016-01) and in 2018 issued technical corrections (ASU 2018-03). This guidance requires that equity investments with readily determinable fair values that are classified as available-for-sale be measured at fair value with changes in value reflected in current earnings. This guidance also simplifies the impairment testing of equity investments without readily determinable fair values and alters certain disclosure requirements. ASU No. 2016-01, Financial Instruments – Overall: Recognition and Measurement of Financial Assets and Financial Liabilities, also provides guidance as to classification of the change in fair value of financial liabilities. Adoption of this standard was effective on January 1, 2019 and has had no material impact on the financial statements given the lack of any such equity investments during the period presented. In March 2016, the FASB issued ASU 2016-09, Compensation – Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting . This guidance simplifies aspects of accounting for employee share-based payments, including income tax consequences, classification of awards as either equity or liabilities, and classifications within the statement of cash flows. This guidance was effective for annual periods beginning after December 15, 2017, with early adoption permitted. Under the Company’s now-terminated Performance Unit Plans (PUPs), vested grants were unable to be exercised prior to either a change in control of the Company or completion of an IPO, and, as a result, expense recognition related to the settlement of these awards was deferred until the PUPs were formally terminated in April 2018. Because the Company has incurred net operating losses since its incorporation, a full valuation allowance has been provided and, accordingly, there was no financial statement impact of adopting the ASU 2016-09 provisions regarding recognition of tax effects associated with share-based compensation. Recent Accounting Pronouncements Not Adopted as of March 31, 2019: In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842), which establishes a comprehensive new lease accounting model. The new standard: (i) clarifies the definition of a lease, (ii) requires a dual approach to lease classification similar to current lease classifications, and (iii) causes lessees to recognize leases on the balance sheet as a lease liability with a corresponding right-of-use asset for leases with a lease-term of more than twelve months. The new standard is effective for the Company for fiscal years and interim periods beginning after December 15, 2019 and requires modified retrospective application. Early adoption is permitted. The Company is currently evaluating the impact that the adoption of ASU 2016-02 will have on its condensed consolidated financial statements. In June 2016, the FASB issued ASU 2016-13, Financial Instruments – Credit Losses (Topic 326) , amending existing guidance on the accounting for credit losses on financial instruments within its scope. The guidance introduces an expected loss model for estimating credit losses, replacing the incurred loss model. The new guidance also changes the impairment model for available-for-sale debt securities, requiring the use of an allowance to record estimated credit losses (and subsequent recoveries). The new guidance is effective for the Company beginning after December 15, 2020. The Company is currently evaluating the impact of the adoption of this guidance on its condensed consolidated financial statements. In August 2016, the FASB issued ASU 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments, providing guidance on the classification of certain cash receipts and payments in the statement of cash flows intended to reduce diversity in practice, including cash flows related to debt prepayment or extinguishment costs and contingent consideration that may be paid following a business combination. The guidance is effective for the Company for fiscal years beginning after December 31, 2019. Early adoption is permitted. The Company is currently evaluating the effect of the standard on its Condensed Consolidated Statement of Cash Flows. In August 2018, the FASB issued ASU 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework. The purpose of the update is to improve the effectiveness of the fair value measurement disclosures that allows for clear communication of information that is most important to the users of financial statements. There were certain required disclosures that have been removed or modified. In addition, the update added the following disclosures: (i) changes in unrealized gains and losses for the period included in other comprehensive income (loss) for recurring Level 3 fair value measurements held at the end of the reporting period and (ii) the range and weighted average of significant unobservable inputs used to develop Level 3 fair value measurements. The standard will become effective for the Company for its periods beginning after December 15, 2019; early adoption is permitted. The Company is currently evaluating the impact of ASU 2018-13 on its condensed consolidated financial statements. Other pronouncements issued by the FASB or other authoritative accounting standards groups with future effective dates are either not applicable or not significant to the condensed consolidated financial statements of the Company.

Note 3. Summary of Significant Accounting Policies

(A) Principles of Consolidation

The interim condensed consolidated financial statements presented herein include the accounts of Aquestive Therapeutics, Inc. and its wholly owned subsidiary, MonoSol Rx, Inc. Other than corporate formation activities, MonoSol Rx, Inc. has conducted no commercial, developmental or operational activities and has no customers or vendors. The results of operations and cash flows reported in these condensed consolidated financial statements should not be regarded as necessarily indicative of results that may be expected in any other interim period or for the entire fiscal year.

(B) Use of Estimates

The preparation of financial statements in conformity with U.S. GAAP requires the use of estimates and assumptions that affect the reported amounts of assets and liabilities, including disclosure of contingent assets and contingent liabilities, at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Significant items subject to estimates and assumptions include allowances for rebates from proprietary product sales, the allowance for sales returns, the useful lives of fixed assets, valuation of share-based compensation, and contingencies.

As an emerging growth company, the Company has elected to take advantage of the extended transition period afforded by the Jumpstart Our Business Startups Act for the implementation of new or revised accounting standards and, as a result, the Company will comply with new or revised accounting standards no later than the relevant dates on which adoption of such standards is required for emerging growth companies.

The Company believes that the impact of recently issued standards that are not yet effective will not have a material impact on its financial position or results of operations upon adoption.

In May 2014, the FASB, issued ASU 2014-09, Revenue from Contracts with Customers, and subsequently issued a number of amendments to this update. The new standard, as amended in Accounting Standards Codification, or ASC 606, provides a single comprehensive model to be used in accounting for revenue arising from contracts with customers and supersedes previous revenue recognition guidance. The standard’s core principle is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. In addition, the standard requires disclosure of the nature, amount, timing and uncertainty of revenue and cash flows arising from contracts with customers.

The Company adopted this standard on January 1, 2019, using the modified retrospective method and recorded a cumulative effect adjustment of $2,832 to increase the opening balance of accumulated deficit. The impact was primarily related to deferral of a portion of the original upfront and milestone payments of its collaborative licensing arrangements resulting in a deferral of $3,100 of previously recognized revenue as of the adoption date. The cumulative adjustment also reflects $151 net acceleration of revenue related to feasibility and development arrangements with its customers and acceleration of $117 of revenue recognition of its manufacturing and supply product sales. Under the modified retrospective method of adoption, the comparative information in the consolidated financial statements have not been revised and continues to be reported under the previously applicable revenue accounting guidance, ASC 605. If ASC 605 had been applied to the first quarter of 2019, deferred revenue would have been $2,683 lower on the condensed consolidated balance sheet, with $278 lower in current portion of deferred revenue and $2,405 Deferred revenue, net of current portion.

For additional information regarding the Company’s revenue, see Note 5, Revenues and Trade Receivables, Net

In June 2018, the FASB issued ASU 2018-07, Compensation – Stock Compensation (Topic 718): Improvements to Non-Employee Share-Based Payment Accounting, which more closely aligns accounting for share-based payments to nonemployees to that of employees under existing guidance of Topic 718. This guidance supersedes previous guidance provided by Subtopic 505-50, Equity – Equity-Based Payments to Non-Employees. The Company adopted the new standard effective January 1, 2019 and recorded a cumulative effect adjustment of $20 to its Accumulated deficit upon adoption.

In January 2016, the FASB issued revised guidance governing accounting and reporting of financial instruments (ASU 2016-01) and in 2018 issued technical corrections (ASU 2018-03). This guidance requires that equity investments with readily determinable fair values that are classified as available-for-sale be measured at fair value with changes in value reflected in current earnings. This guidance also simplifies the impairment testing of equity investments without readily determinable fair values and alters certain disclosure requirements. ASU No. 2016-01, Financial Instruments – Overall: Recognition and Measurement of Financial Assets and Financial Liabilities, also provides guidance as to classification of the change in fair value of financial liabilities. Adoption of this standard was effective on January 1, 2019 and has had no material impact on the financial statements given the lack of any such equity investments during the period presented.

In March 2016, the FASB issued ASU 2016-09, Compensation – Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting . This guidance simplifies aspects of accounting for employee share-based payments, including income tax consequences, classification of awards as either equity or liabilities, and classifications within the statement of cash flows. This guidance was effective for annual periods beginning after December 15, 2017, with early adoption permitted. Under the Company’s now-terminated Performance Unit Plans (PUPs), vested grants were unable to be exercised prior to either a change in control of the Company or completion of an IPO, and, as a result, expense recognition related to the settlement of these awards was deferred until the PUPs were formally terminated in April 2018. Because the Company has incurred net operating losses since its incorporation, a full valuation allowance has been provided and, accordingly, there was no financial statement impact of adopting the ASU 2016-09 provisions regarding recognition of tax effects associated with share-based compensation.

Recent Accounting Pronouncements Not Adopted as of March 31, 2019:

In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842), which establishes a comprehensive new lease accounting model. The new standard: (i) clarifies the definition of a lease, (ii) requires a dual approach to lease classification similar to current lease classifications, and (iii) causes lessees to recognize leases on the balance sheet as a lease liability with a corresponding right-of-use asset for leases with a lease-term of more than twelve months. The new standard is effective for the Company for fiscal years and interim periods beginning after December 15, 2019 and requires modified retrospective application. Early adoption is permitted. The Company is currently evaluating the impact that the adoption of ASU 2016-02 will have on its condensed consolidated financial statements.

In June 2016, the FASB issued ASU 2016-13, Financial Instruments – Credit Losses (Topic 326) , amending existing guidance on the accounting for credit losses on financial instruments within its scope. The guidance introduces an expected loss model for estimating credit losses, replacing the incurred loss model. The new guidance also changes the impairment model for available-for-sale debt securities, requiring the use of an allowance to record estimated credit losses (and subsequent recoveries). The new guidance is effective for the Company beginning after December 15, 2020. The Company is currently evaluating the impact of the adoption of this guidance on its condensed consolidated financial statements.

In August 2016, the FASB issued ASU 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments, providing guidance on the classification of certain cash receipts and payments in the statement of cash flows intended to reduce diversity in practice, including cash flows related to debt prepayment or extinguishment costs and contingent consideration that may be paid following a business combination. The guidance is effective for the Company for fiscal years beginning after December 31, 2019. Early adoption is permitted. The Company is currently evaluating the effect of the standard on its Condensed Consolidated Statement of Cash Flows.

In August 2018, the FASB issued ASU 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework. The purpose of the update is to improve the effectiveness of the fair value measurement disclosures that allows for clear communication of information that is most important to the users of financial statements. There were certain required disclosures that have been removed or modified. In addition, the update added the following disclosures: (i) changes in unrealized gains and losses for the period included in other comprehensive income (loss) for recurring Level 3 fair value measurements held at the end of the reporting period and (ii) the range and weighted average of significant unobservable inputs used to develop Level 3 fair value measurements. The standard will become effective for the Company for its periods beginning after December 15, 2019; early adoption is permitted. The Company is currently evaluating the impact of ASU 2018-13 on its condensed consolidated financial statements.

Other pronouncements issued by the FASB or other authoritative accounting standards groups with future effective dates are either not applicable or not significant to the condensed consolidated financial statements of the Company.