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Facility Financing Agreement - Additional Information (Detail) (USD $) | 280 Months Ended |  |  |  |  |  |  |  | 1 Months Ended | 6 Months Ended | 12 Months Ended | 1 Months Ended | 3 Months Ended |  | 3 Months Ended | 0 Months Ended |  |  | 0 Months Ended |  |  |  |
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Jun. 30, 2014 | Dec. 31, 2013 | Jun. 30, 2014 Tranche B notes | Jul. 01, 2013 Senior convertible notes due December 31, 2019 | Jun. 30, 2014 Senior convertible notes due December 31, 2019 Fourth tranche | Jun. 30, 2014 Senior convertible notes due December 31, 2019 Tranche B notes Maximum | Jul. 01, 2013 Deerfield Milestone Rights Liability Maximum | Jun. 30, 2014 Deerfield Senior convertible notes due December 31, 2019 | Feb. 28, 2014 Deerfield Senior convertible notes due December 31, 2019 | Jan. 31, 2014 Deerfield Senior convertible notes due December 31, 2019 Tranche Two | Jun. 30, 2014 Deerfield Senior convertible notes due December 31, 2019 Tranche Two | Dec. 31, 2013 Deerfield Senior convertible notes due December 31, 2019 Tranche Two | Apr. 30, 2014 Deerfield Senior convertible notes due December 31, 2019 Tranche One | Mar. 31, 2014 Deerfield Senior convertible notes due December 31, 2019 Tranche One | Mar. 31, 2014 Deerfield Senior convertible notes due December 31, 2019 Tranche Three | Jun. 30, 2014 Deerfield Senior convertible notes due December 31, 2019 Tranche One and Tranche Three | Mar. 31, 2014 Deerfield Senior convertible notes due December 31, 2019 Tranche One and Tranche Three Maximum | Jul. 01, 2013 Deerfield Senior convertible notes due December 31, 2019 Notes Issued in Four Equal Tranches Tranche | Jun. 30, 2014 Deerfield Senior convertible notes due December 31, 2019 Notes Issued in Four Equal Tranches | Jul. 01, 2013 Deerfield Senior convertible notes due December 31, 2019 Notes Issued in Four Equal Tranches | Feb. 28, 2014 Deerfield Senior convertible notes due December 31, 2019 Tranche B notes | May 06, 2014 Deerfield Senior convertible notes due December 31, 2019 Tranche B notes | Feb. 28, 2014 Deerfield Senior convertible notes due December 31, 2019 Tranche B notes | Feb. 28, 2014 Deerfield Senior convertible notes due December 31, 2019 Tranche B notes If the Company enters into a collaboration with a third party to commercialize AFFREZZA | Jul. 18, 2014 Subsequent Event Deerfield Senior convertible notes due December 31, 2019 Fourth tranche | Jul. 01, 2013 Subsequent Event Deerfield Senior convertible notes due December 31, 2019 Milestone Rights Liability
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt facility principal amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 120,000,000 | $ 160,000,000 |  |  | $ 90,000,000 |  |  |
Number of equal tranches |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 4 |  |  |  |  |  |  |  |
Debt facility periodic principal amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 40,000,000 |  |  |  |  |  |
Senior notes, effective interest rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 11.63% |  |  |  | 9.75% |  |  | 9.75% | 8.75% |  |
Principal amount of notes purchased |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 20,000,000 |  |  | 40,000,000 |
Repayment as a percentage of original principal amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 25.00% |  |  |
Debt instrument maturity date |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | Dec. 31, 2019 |  |  |  |  |
Aggregate principal amount of convertible notes |  |  |  |  |  |  |  | 0 | 60,000,000 |  |  |  | 7,500,000 | 12,500,000 | 40,000,000 |  |  |  |  |  |  |  |  |  |  |
Common shares issuable upon conversion |  |  |  |  |  |  |  |  | 12,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Contingent liability for milestone payments |  |  |  |  |  |  | 90,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Short term liability | 37,744,000 | 102,300,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3,200,000
Long term liability | 37,744,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 13,100,000
Commitment asset at fair value |  |  | 2,921,000 | 2,900,000 | 40,000,000 | 70,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,800,000 |  |  |  |
Amount of common shares issued upon conversion | 3,331,000 |  |  |  |  |  |  |  |  | 33,500,000 |  | 6,500,000 | 7,500,000 | 12,500,000 | 40,000,000 |  | 60,000,000 |  |  |  |  |  |  |  |  |
Common shares issued upon conversion |  |  |  |  |  |  |  |  |  | 6,559,251 |  | 1,293,224 | 1,500,000 | 2,142,709 | 7,121,120 |  |  |  |  |  |  |  |  |  |  |
Loss on debt conversion |  |  |  |  |  |  |  |  |  |  |  | 600,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt extinguishment costs |  |  |  |  |  |  |  |  |  |  | $ 3,000,000 |  | $ 400,000 |  | $ 3,000,000 |  |  |  |  |  |  |  |  |  |  |

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