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Stock-Based Compensation Activity of Stock based Compensation Units (Details)
3 Months Ended
Mar. 31, 2020
$ / shares
shares
Number of Shares  
Stock options outstanding, beginning balance (in shares) | shares 5,815,724
Forfeited (in shares) | shares (270,000)
Stock options outstanding, ending balance (in shares) | shares 5,545,724
Stock options exercisable - March 31, 2020 (in shares) | shares 137,500
Weighted-Average Exercise Price  
Stock options outstanding, beginning balance (in dollars per share) | $ / shares $ 0.56
Forfeited (in dollars per share) | $ / shares 0.55
Stock options outstanding, ending balance (in dollars per share) | $ / shares 0.56
Stock options exercisable - March 31, 2020 (in dollars per share) | $ / shares $ 0.55