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9. STOCK-BASED COMPENSATION (Details - Unvested) (Unvested Stock Options, USD $)
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3 Months Ended |
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Mar. 31, 2015
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Unvested Stock Options
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| Unvested stock options, beginning balance |
3,421,131us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfShares / us-gaap_StatementEquityComponentsAxis = canv_UnvestedStockOptionsMember |
| Unvested options granted | |
| Unvested options vested |
(481,381)us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedNumberOfShares / us-gaap_StatementEquityComponentsAxis = canv_UnvestedStockOptionsMember |
| Unvested options forfeited |
(80,000)us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedOptionsForfeitedNumberOfShares / us-gaap_StatementEquityComponentsAxis = canv_UnvestedStockOptionsMember |
| Unvested stock options, ending balance |
2,859,750us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfShares / us-gaap_StatementEquityComponentsAxis = canv_UnvestedStockOptionsMember |
| Weighted average exercise price, beginning balance |
$ 2.31us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice / us-gaap_StatementEquityComponentsAxis = canv_UnvestedStockOptionsMember |
| Weighted average fair value per share on grant date, granted | |
| Weighted average fair value per share on grant date, vested |
$ 2.19us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice / us-gaap_StatementEquityComponentsAxis = canv_UnvestedStockOptionsMember |
| Weighted average fair value per share on grant date, forfeited |
$ 2.50us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice / us-gaap_StatementEquityComponentsAxis = canv_UnvestedStockOptionsMember |
| Weighted average exercise price, ending balance |
$ 2.33us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice / us-gaap_StatementEquityComponentsAxis = canv_UnvestedStockOptionsMember |
| X | ||||||||||
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- Definition
Net number of share options (or share units) granted during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Number of non-vested options outstanding. No definition available.
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| X | ||||||||||
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- Definition
Number of non-vested options forfeited. No definition available.
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| X | ||||||||||
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- Definition
Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Number of options vested. No definition available.
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| X | ||||||||||
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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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| X | ||||||||||
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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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| X | ||||||||||
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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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