Stockholders' Equity (Tables) |
3 Months Ended | |||||||||||||||||||||||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Mar. 31, 2019 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
Equity [Abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
Schedule of Unvested Restricted Stock Units Roll Forward [Table Text Block] |
The following table summarizes restricted stock unit and award activity for the three months ended March 31, 2019:
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||
Share-based Compensation, Stock Options, Activity [Table Text Block] |
The following table summarizes stock option award activity for the three months ended March 31, 2019:
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||
Share-based Compensation, Activity [Table Text Block] |
The following table summarizes the warrant activity for the three months ended March 31, 2019:
|