Accounts Receivable (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, net	$ 1,409	$ 109
Allowance for Doubtful Accounts Receivable	(10)	(10)
Collaborators [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, net	142	14
Royalties [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, net	1,268	40
Other Receivables [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, net	9	65
Subtotal [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, net	$ 1,419	$ 119