Shareholders Equity and Capital Stock (Details) - $ / shares |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2020 |
Dec. 31, 2019 |
Dec. 31, 2018 |
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| Shareholders' Equity and Capital Stock | |||
| Outstanding, Beginning Balance | 11,076,583 | 9,731,612 | 9,459,401 |
| Granted, Options | 2,950,180 | 2,852,386 | 2,182,955 |
| Exercised, options | (159,982) | (323,618) | (496,838) |
| Forfeited, Options | (534,425) | (395,851) | (275,085) |
| Expired, Options | (1,421,932) | (787,946) | (1,138,821) |
| Outstanding Ending Balance, Options | 11,910,424 | 11,076,583 | 9,731,612 |
| Outstanding, Beginning Balance, Weighted-average exercise price | $ 0.64 | $ 0.64 | $ 0.70 |
| Granted, Weighted-average exercise price | 0.48 | 0.61 | 0.70 |
| Exercised, Weighted-average exercise price | 0.63 | 0.63 | 0.58 |
| Forfeited, Weighted-average exercise price | 0.64 | 0.71 | 0.72 |
| Expired, Weighted-average exercise price | 0.66 | 0.83 | 0.83 |
| Outstanding Ending Balance, Weighted-average exercise price | $ 0.61 | $ 0.64 | $ 0.64 |
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- Definition Number of non-option equity instruments exercised by participants. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Number of options or other stock instruments for which the right to exercise has lapsed under the terms of the plan agreements. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Net number of share options (or share units) granted during the period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Weighted average price at which option holders acquired shares when converting their stock options into shares. No definition available.
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- Definition Weighted average price at which grantees could have acquired the underlying shares with respect to stock options of the plan that expired. No definition available.
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- Definition Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated. No definition available.
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- Definition Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options. No definition available.
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- References No definition available.
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