Significant Customer and Geographic Information (Concentration Risk) (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Customer E [Member]
Concentration Risk [Line Items]
Royalty past due and future settlement payment			$ 3.1
Customer Concentration Risk [Member] | Customer A [Member] | Sales [Member]
Concentration Risk [Line Items]
Concentration Risk, Percentage	37.00%	27.00%
Customer Concentration Risk [Member] | Customer B [Member] | Sales [Member]
Concentration Risk [Line Items]
Concentration Risk, Percentage	18.00%
Customer Concentration Risk [Member] | Customer C (related party) [Member] | Sales [Member]
Concentration Risk [Line Items]
Concentration Risk, Percentage		22.00%
Customer Concentration Risk [Member] | Customer D [Member] | Sales [Member]
Concentration Risk [Line Items]
Concentration Risk, Percentage		11.00%
Credit Concentration Risk [Member] | Customer A [Member] | Accounts Receivable [Member]
Concentration Risk [Line Items]
Concentration Risk, Percentage	42.00%		12.00%
Credit Concentration Risk [Member] | Customer B [Member] | Accounts Receivable [Member]
Concentration Risk [Line Items]
Concentration Risk, Percentage	17.00%
Credit Concentration Risk [Member] | Customer D [Member] | Accounts Receivable [Member]
Concentration Risk [Line Items]
Concentration Risk, Percentage			22.00%
Credit Concentration Risk [Member] | Customer E [Member] | Accounts Receivable [Member]
Concentration Risk [Line Items]
Concentration Risk, Percentage			40.00%