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Description of Business and Significant Accounting Policies - Additional Information (Detail) |  |  |  |  | 1 Months Ended | 3 Months Ended | 9 Months Ended | 12 Months Ended |  |  |  |
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Jun. 29, 2017 USD ($) | Apr. 18, 2017 USD ($) | Mar. 01, 2017 shares | Nov. 09, 2016 USD ($) | Jan. 31, 2017 USD ($) | Dec. 31, 2016 USD ($) Distributor shares | Sep. 30, 2017 USD ($) Distributor shares | Sep. 30, 2016 USD ($) shares | Sep. 30, 2017 USD ($) Distributor Contract shares | Sep. 30, 2016 USD ($) shares | Dec. 31, 2016 USD ($) Distributor Contract shares | Jun. 30, 2017 USD ($) | Jun. 27, 2017 USD ($) | Dec. 31, 2015 USD ($) | Sep. 23, 2014
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net revenue from collaboration |  |  |  |  |  |  | $ 62,000 | $ 161,781,000 | $ 187,000 | $ 161,781,000 |  |  |  |  |
Gain on extinguishment of debt |  |  |  |  |  |  |  |  | (830,000) |  |  |  |  |  |
Cash and cash equivalents |  |  |  |  |  | $ 22,895,000 | 20,092,000 | $ 35,530,000 | 20,092,000 | $ 35,530,000 | $ 22,895,000 |  |  | $ 59,074,000 |
Accumulated deficit |  |  |  |  |  | $ (2,737,565,000) | $ (2,822,114,000) |  | $ (2,822,114,000) |  | $ (2,737,565,000) |  |  |  |
Stock split of common stock |  |  | 0.2 |  |  |  |  |  |  |  |  |  |  |  |
Common stock, shares authorized | shares |  |  | 140,000,000 |  |  | 140,000,000 | 140,000,000 | 700,000,000 | 140,000,000 | 700,000,000 | 140,000,000 |  |  |  |
Reverse stock split, description |  |  |  |  |  |  |  |  | The Company’s board of directors approved a reverse stock split ratio of 1-for-5. On March 1, 2017, the Company filed with the Secretary of State of the State of Delaware a Certificate of Amendment of the Company’s Amended and Restated Certificate of Incorporation (the “Charter Amendment”) to effect the 1-for-5 reverse stock split of the Company’s outstanding common stock (the “Reverse Stock Split”) and to reduce the authorized number of shares of the Company’s common stock from 700,000,000 to 140,000,000 shares. The Company’s common stock began trading on the NASDAQ Global Market on a split-adjusted basis when the market opened on March 3, 2017. As a result, all common stock share amounts included in these condensed consolidated financial statements have been retroactively reduced by a factor of five, and all common stock per share amounts have been increased by a factor of five, with the exception of the Company’s common stock par value. |  |  |  |  |  |
Net deferred revenue |  |  |  |  |  | $ 3,419,000 | $ 3,021,000 |  | $ 3,021,000 |  | $ 3,419,000 |  |  |  |
Net revenue - commercial product sales |  |  |  |  |  |  | $ 1,981,000 | $ 573,000 | $ 4,726,000 | $ 573,000 |  |  |  |  |
Number of wholesale distributors | Distributor |  |  |  |  |  |  | 3 |  | 3 |  |  |  |  |  |
Percentage of product shipments to wholesale distributors |  |  |  |  |  |  | 92.00% |  | 92.00% |  |  |  |  |  |
Deferred revenue from sale of raw insulin |  |  |  |  |  |  |  |  | $ 0 |  | $ 1,700,000 |  |  |  |
Cash discount as incentive for prompt payment |  |  |  |  |  |  | 2.00% |  | 2.00% |  |  |  |  |  |
Number of wholesale distributors accounted for gross accounts receivable | Distributor |  |  |  |  |  | 3 | 3 |  | 3 |  | 3 |  |  |  |
Allowance for doubtful accounts |  |  |  |  |  | $ 0 | $ 0 |  | $ 0 |  | $ 0 |  |  |  |
Percentage of accounts receivable from major wholesale distributors |  |  |  |  |  | 95.00% | 92.00% |  | 92.00% |  | 95.00% |  |  |  |
Loss on purchase commitments, number of contracts recognized | Contract |  |  |  |  |  |  |  |  | 0 |  | 0 |  |  |  |
License and Collaboration Agreement with Sanofi |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gain on extinguishment of debt |  |  |  | $ 500,000 |  |  |  |  |  |  |  |  |  |  |
Senior notes, effective interest rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 8.50%
Third party logistics |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net deferred revenue |  |  |  |  |  | $ 800,000 | $ 1,100,000 |  | $ 1,100,000 |  | $ 800,000 |  |  |  |
Insulin Put |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net revenue from collaboration |  |  |  |  |  | 10,200,000 |  |  |  |  |  |  |  |  |
AFREZZA product sales |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Product sales revenue gross to net adjustments |  |  |  |  |  |  | $ 900,000 |  | $ 2,400,000 |  |  |  |  |  |
Product sales revenue gross to net adjustments percentage |  |  |  |  |  |  | 30.00% |  | 33.00% |  |  |  |  |  |
Minimum | AFREZZA product sales |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sales return right following product expiration in months |  |  |  |  |  |  |  |  | 6 months |  |  |  |  |  |
Maximum | AFREZZA product sales |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sales return right following product expiration in months |  |  |  |  |  |  |  |  | 12 months |  |  |  |  |  |
Senior convertible notes due December 31, 2019 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gain on extinguishment of debt | $ (500,000) |  |  |  |  |  |  |  |  |  |  |  |  |  |
Senior convertible notes due December 31, 2019 | Less portion of commitment asset |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gain on extinguishment of debt |  | $ (300,000) |  |  |  |  |  |  |  |  |  |  |  |  |
Principal stockholder | Loan Arrangement |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Available amount of credit facility under covenant restrictions |  |  |  |  |  |  |  |  |  |  |  | $ 19,400,000 | $ 19,400,000 |  |
Amount available for future borrowings |  |  |  |  |  |  | $ 0 |  | $ 0 |  |  |  | $ 30,100,000 |  |
Accrued interest of related party debt |  |  |  |  |  | $ 9,300,000 | $ 1,200,000 |  | 1,200,000 |  | 9,300,000 | $ 10,700,000 |  |  |
Sanofi-Aventis Deutschland GmbH | License and Collaboration Agreement with Sanofi |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net revenue from collaboration |  |  |  |  |  |  |  |  | 172,000,000 |  |  |  |  |  |
Sanofi-Aventis Deutschland GmbH | Insulin Put | License and Collaboration Agreement with Sanofi |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net revenue from collaboration |  |  |  |  |  |  |  |  | 19,400,000 |  |  |  |  |  |
Sanofi-Aventis Deutschland GmbH | AFREZZA product sales | License and Collaboration Agreement with Sanofi |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net revenue from collaboration |  |  |  |  |  |  |  |  | $ 17,500,000 |  |  |  |  |  |
Sanofi-Aventis Deutschland GmbH | Put Option |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payment for insulin put option |  |  |  |  | $ 30,600,000 |  |  |  |  |  | $ 30,600,000 |  |  |  |
Aventisub LLC |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outstanding loan balance forgive |  |  |  | $ 72,000,000 |  |  |  |  |  |  |  |  |  |  |
Deerfield | Senior convertible notes due December 31, 2019 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Senior notes, effective interest rate |  |  |  |  |  |  | 9.75% |  | 9.75% |  |  |  |  |  |
Deerfield | Senior convertible notes due December 31, 2019 | Third Amendment [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount available for future borrowings | 10,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Conversion of notes to shares of common Stock, value | 5,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deerfield | Senior convertible notes due December 31, 2019 | Less portion of commitment asset |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Senior notes, effective interest rate |  |  |  |  |  |  | 8.75% |  | 8.75% |  |  |  |  |  |
Cash repayment of senior notes under exchange agreement |  | 4,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Conversion of notes to shares of common Stock, value |  | 1,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Deerfield | Senior convertible notes due December 31, 2019 | Tranche 1 Notes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Conversion of notes to shares of common Stock, value |  | $ 5,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Deerfield | Senior convertible notes due December 31, 2019 | Minimum | Less portion of commitment asset |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Available amount of credit facility under covenant restrictions |  |  |  |  |  |  | $ 25,000,000 |  | $ 25,000,000 |  |  |  |  |  |
Deerfield | Senior convertible notes due December 31, 2019 | Minimum | Less portion of commitment asset | Third Amendment [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Available amount of credit facility under covenant restrictions | $ 10,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |

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