Development Awards and Deferred Revenue (Tables)
|3 Months Ended|
Mar. 31, 2019
|Two Thousand Fourteen Equity Incentive Plan [Member]|
|Schedule of Roll Forward Deferred Revenue||
A roll forward of deferred revenue related to the Investment Agreement for the three months ended March 31, 2019 is presented below.
Tabular disclosure of contract balances and changes in contract balances.
Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef