Need to Raise Additional Capital - Additional Information (Detail)		1 Months Ended	12 Months Ended
	Mar. 21, 2016 USD ($)	Feb. 29, 2016 USD ($) Installment shares	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)	Jan. 01, 2013 USD ($)
Need To Raise Additional Capital [Line Items]
Cash and cash equivalents			$ 7,755,000	$ 15,200,000	$ 17,306,000	$ 17,715,000
Working capital deficiency			$ (47,206,000)
Operating and capital plans			12 months
Proceeds from financing obligations			$ 2,914,000	$ 50,830,000	$ 15,000,000
Subsequent Event [Member] | Ferrer Promissory Note Tranche Two [Member]
Need To Raise Additional Capital [Line Items]
Proceeds from financing obligations	$ 1,000,000
Subsequent Event [Member] | Teva Note [Member]
Need To Raise Additional Capital [Line Items]
Common stock shares issued upon debt conversion | shares		2,172,886
Reduction in outstanding balance of Notes		$ 5,000,000
Outstanding balance of notes		$ 20,000,000
Number of annual consecutive payments | Installment		4
Annual consecutive payments amount		$ 5,000,000
Aggregate annual net sales of ADASUVE and Staccato enabled products		$ 50,000,000
Subsequent Event [Member] | Teva Note [Member] | Common Stock [Member]
Need To Raise Additional Capital [Line Items]
Common stock shares issued upon debt conversion | shares		2,172,886