Summary of Significant Accounting Policies (Tables)

6 Months Ended

Jun. 30, 2017

Accounting Policies [Abstract]

Concentration Risk, Credit Risk, Policy [Policy Text Block]

Concentrations. One licensee individually accounted for 85% of revenues recognized during the three months ended June 30, 2017, and two licensees accounted for 55% and 26% of revenues recognized during the six months ended June 30, 2017. One licensee individually accounted for 85% of revenues recognized during the three months ended June 30, 2016, and one licensee accounted for 53% of revenues recognized during the six months ended June 30, 2016. For the three and six months ended June 30, 2017, 90% and 87%, respectively, of revenues were attributable to licensees domiciled in foreign jurisdictions, based on the jurisdiction of the entity obligated to satisfy payment obligations pursuant to the applicable revenue arrangement. For the three and six months ended June 30, 2016, 85% and 63%, respectively, of revenues were attributable to licensees domiciled in foreign jurisdictions. The Company does not have any material foreign operations.

One licensee individually represented approximately 98% of accounts receivable at June 30, 2017. Four licensees individually represented approximately 39%, 22%, 16% and 15% of accounts receivable at December 31, 2016.