Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies (Details 3)

v3.19.2
Summary of Significant Accounting Policies (Details 3) - Contingent Royalty Obligation [Member]
$ in Thousands
6 Months Ended
Jun. 30, 2019
USD ($)
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]  
Balance at beginning $ 1,953
Change in estimated fair value of contingent royalty obligation 59
Balance at ending $ 2,012