Sale of Sumavel DosePro Business - Additional Information (Details) (USD $)	3 Months Ended		6 Months Ended			0 Months Ended	6 Months Ended		3 Months Ended	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	May 16, 2014 Notes Payable, Other Payables [Member]	May 16, 2014 Sumavel DosePro [Member]	Jun. 30, 2014 Sumavel DosePro [Member]	May 16, 2014 Sumavel DosePro [Member]	Jun. 30, 2014 Sumavel DosePro [Member] Notes Payable, Other Payables [Member]	Jun. 30, 2014 Sumavel DosePro [Member] Notes Payable, Other Payables [Member]	May 16, 2014 Sumavel DosePro [Member] Notes Payable, Other Payables [Member]	May 16, 2014 Sumavel DosePro [Member] Purchasing Entity [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from sale of business			$ 89,624,000	$ 0		$ 85,000,000
Escrow Deposit								8,500,000
Revenue from finished goods inventory						4,624,000
Contingent consideration, asset												20,000,000
Cost of goods sold mark-up, in percent						2.50%
Face amount of debt					7,000,000						7,000,000
Transaction costs								660,000
Contract Receivable								9,100,000
Debt discount								4,748,000			4,748,000
Net gain on sale of business	79,980,000	0	79,980,000	0		79,980,000	79,980,000
Contract revenue	2,238,000	0	2,238,000	0			2,238,000
Deferred Revenue							9,005,000	9,108,000
Interest expense									$ 40,000	$ 40,000