Accounts Receivable (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, net	$ 41,667	$ 2,879
Allowance for Doubtful Accounts Receivable	(10)	(7)
Collaborators [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, net	40,023	12
Royalties [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, net	1,651	2,862
Other Receivables [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, net	3	12
Subtotal [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, net	$ 41,677	$ 2,886