Stock based compensation, options and warrants (Schedule of Restricted Stock Activity) (Details) - Restricted Stock [Member] |
6 Months Ended |
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Jun. 30, 2018
$ / shares
shares
| |
Number of shares | |
Beginning balance | shares | 496,152 |
Granted | shares | 335,000 |
Vested | shares | (108,439) |
Forfeited | shares | (26,563) |
Delivered | shares | (124,583) |
Ending balance | shares | 571,567 |
Weighted Average Grant Date Fair value | |
Beginning balance | $ / shares | $ 5.97 |
Granted | $ / shares | 12.29 |
Vested | $ / shares | 9.36 |
Forfeited | $ / shares | 10.58 |
Delivered | $ / shares | 5.42 |
Ending balance | $ / shares | $ 8.78 |
X | ||||||||||
- Definition Issued. No definition available.
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X | ||||||||||
- Definition Gross number of share options (or share units) granted during the period. No definition available.
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X | ||||||||||
- Definition The weighted average grant-date fair 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
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X | ||||||||||
- Definition Number of non-vested options outstanding. No definition available.
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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.
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X | ||||||||||
- Definition Number of non-vested options forfeited. No definition available.
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X | ||||||||||
- Definition Weighted average grant-date fair value of non-vested options forfeited. No definition available.
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X | ||||||||||
- Definition Weighted average grant-date fair value of non-vested options outstanding. No definition available.
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X | ||||||||||
- References No definition available.
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X | ||||||||||
- Definition Number of increase (decrease) of non-vested options. No definition available.
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X | ||||||||||
- Definition Number of options vested. No definition available.
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X | ||||||||||
- Definition Weighted average grant-date fair value of options vested. No definition available.
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- Details
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