Summary of Significant Accounting Policies - Revenue Recognition Narrative (Details)	12 Months Ended
	Dec. 31, 2012
Revenue from External Customer [Line Items]
Sales revenue, discount rate	2.00%
Sumavel DosePro [Member]
Revenue from External Customer [Line Items]
Product shelf life	30 months
Sumavel DosePro [Member] | Period Prior to Expiration [Member]
Revenue from External Customer [Line Items]
Period to accept returned unused product	6 months
Sumavel DosePro [Member] | Period After Expiration [Member]
Revenue from External Customer [Line Items]
Period to accept returned unused product	1 year