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Equity - Stock Options - Activity (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Equity |  |  |
Outstanding shares, ending balance | 2,697 | 2,131 |
Granted (in shares) | 1,065 | 743 |
Exercised (in shares) | (327) | (117) |
Forfeited/Expired/Exchanged - (in shares) | (471) | (60) |
Outstanding shares, beginning balance | 2,964 | 2,697 | 2,131
Exercisable at December 31, Options (in shares) | 2,178 | 2,380 |
Outstanding - Weighted Average Exercise Price (in dollars per share) | $ 2.18 | $ 2.53 |
Exercise price (in dollars per share) | 3.15 | 1.07 |
Exercised - Weighted Average Exercise Price (in dollars per share) | 1.41 | 1.08 |
Forfeited/Expired/Exchanged - Weighted Average Exercise Price (in dollars per share) | 5.70 | 2.88 |
Outstanding - Weighted Average Exercise Price (in dollars per share) | 2.06 | 2.18 | $ 2.53
Exercisable - Weighted Average Exercise Price (in dollars per share) | $ 1.72 | $ 2.26 |
Granted - Weighted Average Remaining Contractual Life (in years) | 8 years 4 months 24 days | 9 years 2 months 23 days |
Stock options, Contractual life (in years) | 6 years 10 months 20 days | 7 years 6 months 10 days | 7 years 11 months 26 days
Stock options, Contractual life (in years) |  | 7 years 6 months 10 days |
Exercisable - Weighted Average Remaining Contractual Life (in years) | 6 years 2 months 12 days | 7 years 5 months 23 days |
Estimated aggregate pretax intrinsic value | $ 513 |  |
Total unrecognized compensation | $ 1,725 |  |

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- Definition Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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