Note 7 - Other Equity - Stock Option Transactions (Details) |
6 Months Ended | |
---|---|---|
Jun. 30, 2018
USD ($)
|
Jun. 30, 2017
USD ($)
|
|
Statement Line Items [Line Items] | ||
Outstanding, Beginning of period | 2,344,000 | 2,005,000 |
Outstanding, Beginning of period, weighted average exercise price | $ 3.46 | $ 4.31 |
Stock options, granted | 2,084,000 | 728,000 |
Stock options, weighted average exercise price, granted | $ 2.96 | $ 1.10 |
Stock options, exercised | (77,000) | |
Stock options, weighted average exercise price, exercised | $ 2.31 | |
Stock options, forfeited | (17,000) | (142,000) |
Stock options, weighted average exercise price, forfeited | $ 2.01 | $ 3.65 |
Stock options, expired | (263,000) | |
Stock options, weighted average exercise price, expired | $ 4.97 | |
Outstanding, end of period | 4,334,000 | 2,328,000 |
Outstanding, end of period, weighted average exercise price | $ 3.16 | $ 3.40 |
X | ||||||||||
- References No definition available.
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X | ||||||||||
- Definition The number of share options outstanding in a share-based payment arrangement. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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X | ||||||||||
- Definition The number of share options exercised in a share-based payment arrangement. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
X | ||||||||||
- Definition The number of share options expired in a share-based payment arrangement. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
X | ||||||||||
- Definition The number of share options forfeited in a share-based payment arrangement. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
X | ||||||||||
- Definition The number of share options granted in a share-based payment arrangement. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
X | ||||||||||
- Definition The weighted average exercise price of share options exercised in a share-based payment arrangement. [Refer: Weighted average [member]] Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
X | ||||||||||
- Definition The weighted average exercise price of share options expired in a share-based payment arrangement. [Refer: Weighted average [member]] Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
X | ||||||||||
- Definition The weighted average exercise price of share options forfeited in a share-based payment arrangement. [Refer: Weighted average [member]] Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
X | ||||||||||
- Definition The weighted average exercise price of share options granted in a share-based payment arrangement. [Refer: Weighted average [member]] Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
X | ||||||||||
- Definition The weighted average exercise price of share options outstanding in a share-based payment arrangement. [Refer: Weighted average [member]] Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|