Shareholders' Equity and Capital Stock - options activity (Details) |
6 Months Ended |
|---|---|
|
Jun. 30, 2019
$ / shares
shares
| |
| Options Rollforward | |
| Outstanding, Beginning Balance | shares | 9,731,612 |
| Granted, Options | shares | 0 |
| Exercised, Options | shares | (206,160) |
| Expired, Options | shares | (100,000) |
| Outstanding Ending Balance, Options | shares | 9,425,452 |
| Outstanding, Beginning Balance, Weighted-average exercise price | $ / shares | $ 0.64 |
| Exercised, Weighted-average exercise price | $ / shares | 0.65 |
| Expired, Weighted-average exercise price | $ / shares | 1.26 |
| Outstanding Ending Balance, Weighted-average exercise price | $ / shares | 0.66 |
| Grant date intrinsic value | $ / shares | $ 0 |
| X | ||||||||||
- 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
|
| X | ||||||||||
- Definition The grant-date intrinsic value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Gross number of share options (or share units) granted during the period. No definition available.
|
| X | ||||||||||
- Definition Number of options outstanding, including both vested and non-vested options. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. No definition available.
|
| X | ||||||||||
- Definition Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Weighted average price at which option holders acquired shares when converting their stock options into shares. No definition available.
|
| X | ||||||||||
- 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.
|
| X | ||||||||||
- Definition Number of share options (or share units) exercised during the current period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|