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Summary of Significant Accounting Policies - Additional Information (Detail) $ / shares in Units, € in Millions | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Dec. 31, 2017 USD ($) Distributor | Sep. 30, 2017 USD ($) | Jun. 30, 2017 USD ($) | Mar. 31, 2017 USD ($) | Dec. 31, 2016 USD ($) Distributor | Sep. 30, 2016 USD ($) | Jun. 30, 2016 USD ($) | Mar. 31, 2016 USD ($) | Dec. 31, 2017 USD ($) Distributor $ / shares | Dec. 31, 2017 EUR (€) Distributor | Dec. 31, 2016 USD ($) Distributor | Dec. 31, 2015 USD ($) | Jan. 01, 2018 USD ($)
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Net (loss) income | $ (32,784,000) | $ (32,886,000) | $ (35,339,000) | $ (16,324,000) | $ 53,976,000 | $ 126,520,000 | $ (29,959,000) | $ (24,873,000) | $ (117,333,000) |  | $ 125,664,000 | $ (368,445,000) |
Net revenue - commercial product sales | 1,200,000 |  |  |  |  |  |  |  | 9,192,000 |  | 1,895,000 |  |
Net deferred revenue | $ 3,038,000 |  |  |  | 3,419,000 |  |  |  | $ 3,038,000 |  | 3,419,000 |  |
Number of wholesale distributors | Distributor |  |  |  |  |  |  |  |  | 3 | 3 |  |  |
Percentage of product shipments to wholesale distributors |  |  |  |  |  |  |  |  | 89.00% | 89.00% |  |  |
Deferred revenue from sale of raw insulin |  |  |  |  |  |  |  |  | $ 0 |  | 1,700,000 |  |
Cash discount as incentive for prompt payment | 2.00% |  |  |  |  |  |  |  | 2.00% |  |  |  |
Revenue - other |  |  |  |  |  |  |  |  | $ 2,303,000 |  | $ 898,000 |  |
Maturity period of cash equivalents |  |  |  |  |  |  |  |  | 90 days or less at the time of purchase | 90 days or less at the time of purchase | 90 days from the date of purchase |  |
Allowance for doubtful accounts | $ 0 |  |  |  | $ 0 |  |  |  | $ 0 |  | $ 0 |  |
Number of wholesale distributors accounted for gross accounts receivable | Distributor | 3 |  |  |  | 3 |  |  |  | 3 |  | 3 |  |
Percentage of accounts receivable from major wholesale distributors | 93.00% |  |  |  | 95.00% |  |  |  | 93.00% |  | 95.00% |  |
Inventory charge |  |  |  |  |  |  |  |  | $ 3,000,000 |  | $ 0 | 39,300,000 |
Percentage of credit exchange receivable |  |  |  |  |  |  |  |  | 65.00% | 65.00% |  |  |
Estimated amounts receivable under program | $ 0 |  |  |  | $ 200,000 |  |  |  | $ 0 |  | 200,000 | 700,000 |
Prepaid expenses and other current assets | 3,010,000 |  |  |  | 4,364,000 |  |  |  | $ 3,010,000 |  | 4,364,000 |  |
Long-lived assets anticipated sale in year |  |  |  |  |  |  |  |  | 1 year | 1 year |  |  |
Asset impairment charge |  |  |  |  |  |  |  |  | $ 200,000 |  | 1,300,000 | 140,600,000 |
Purchase commitment obligation | 109,300,000 |  |  |  |  |  |  |  | $ 109,300,000 |  |  | 116,200,000 |
Long term purchase commitment | € |  |  |  |  |  |  |  |  |  | € 90.3 |  |  |
Revenue recognition, milestone method, number of milestone |  |  |  |  |  |  |  |  | 13 | 13 |  |  |
Liability for uncertainty in income taxes | 0 |  |  |  |  |  |  |  | $ 0 |  |  |  |
Outstanding warrants |  |  |  |  | 7,400,000 |  |  |  |  |  | 7,400,000 |  |
Interest cost capitalized |  |  |  |  |  |  |  |  | $ 0 |  | 0 | 100,000 |
Lessee, term of contract |  |  |  |  |  |  |  |  | 12 months | 12 months |  |  |
Restricted cash balances | 4,400,000 |  |  |  | 0 |  |  |  | $ 4,400,000 |  | 0 |  |
Accumulated Deficit |  |  |  |  |  |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Net (loss) income |  |  |  |  |  |  |  |  | (117,333,000) |  | 125,664,000 | (368,445,000) |
Accumulated Deficit | Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Cumulative effect adjustments on accumulated deficit |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,700,000
Sanofi-Aventis Deutschland GmbH |  |  |  |  |  |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Long term purchase commitment |  |  |  |  |  |  |  |  |  |  |  | $ 50,000,000 |
Deerfield | Milestone Rights Liability | Senior convertible notes due December 31, 2019 |  |  |  |  |  |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Long term liability | 8,900,000 |  |  |  | 8,900,000 |  |  |  | 8,900,000 |  | 8,900,000 |  |
Certificates of Deposit |  |  |  |  |  |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Prepaid expenses and other current assets | 400,000 |  |  |  | 400,000 |  |  |  | 400,000 |  | 400,000 |  |
Intellectual property |  |  |  |  |  |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue - other |  |  | $ 600,000 |  |  |  |  |  | 600,000 |  |  |  |
Third party logistics |  |  |  |  |  |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Net deferred revenue | $ 1,500,000 |  |  |  | $ 800,000 |  |  |  | 1,500,000 |  | 800,000 |  |
Inventory in Distribution Channel |  |  |  |  |  |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Net (loss) income |  |  |  |  |  |  |  |  | $ 1,200,000 |  |  |  |
Basic and diluted net income (loss) per share | $ / shares |  |  |  |  |  |  |  |  | $ 0.01 |  |  |  |
AFREZZA product sales |  |  |  |  |  |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Product sales revenue gross to net adjustments |  |  |  |  |  |  |  |  | $ 3,400,000 |  | $ 800,000 |  |
Product sales revenue gross to net adjustments percentage |  |  |  |  |  |  |  |  | 27.00% | 27.00% | 30.00% |  |
AFREZZA product sales | Sales through Specialty Pharmacies |  |  |  |  |  |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Net revenue - commercial product sales |  |  |  |  |  |  |  |  | $ 500,000 |  |  |  |
Bulk insulin sales |  |  |  |  |  |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue - other |  |  |  |  |  |  |  |  | $ 1,700,000 |  |  |  |
Minimum | AFREZZA product sales |  |  |  |  |  |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Sales return right following product expiration in months |  |  |  |  |  |  |  |  | 6 months | 6 months |  |  |
Maximum | AFREZZA product sales |  |  |  |  |  |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Sales return right following product expiration in months |  |  |  |  |  |  |  |  | 12 months | 12 months |  |  |

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