Net Loss Per Share (Details) - shares shares in Thousands |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2019 |
Jun. 30, 2018 |
Jun. 30, 2019 |
Jun. 30, 2018 |
|
| Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount | 1,734 | 857 | 1,484 | 843 |
| Convertible Debt Securities | ||||
| Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount | 333 | 0 | 333 | |
| Employee Stock Option | ||||
| Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount | 1,124 | 610 | 894 | 555 |
| Warrant | ||||
| Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount | 277 | 247 | 257 | 288 |