Summary of Significant Accounting Policies - Additional Information (Details) (USD $)	3 Months Ended		6 Months Ended			0 Months Ended
	Jun. 30, 2014 segment	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2009	May 16, 2014 Sumavel DosePro [Member]	Jun. 30, 2014 Sumavel DosePro [Member]
Line of Credit Facility [Line Items]
Cost of goods sold mark-up, in percent						2.50%
Restricted Cash and Cash Equivalents							$ 8,500,000
Line of Credit Facility, Maximum Borrowing Capacity					200,000
Impairment of long-lived assets	$ 838,000	$ 0	$ 838,000	$ 0
Number of business segments	1