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9. WARRANTS (Details) (Warrants, USD $)
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9 Months Ended |
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Jan. 31, 2015
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Warrants
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| Warrants outstanding, beginning balance |
57,665,600us-gaap_ClassOfWarrantOrRightOutstanding / us-gaap_AwardTypeAxis = us-gaap_WarrantMember |
| Warrants exercised |
(550,000)us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsExercised / us-gaap_AwardTypeAxis = us-gaap_WarrantMember |
| Warrants issued |
854,308us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod / us-gaap_AwardTypeAxis = us-gaap_WarrantMember |
| Warrants outstanding, ending balance |
57,969,908us-gaap_ClassOfWarrantOrRightOutstanding / us-gaap_AwardTypeAxis = us-gaap_WarrantMember |
| Warrants exercisable |
57,969,908us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights / us-gaap_AwardTypeAxis = us-gaap_WarrantMember |
| Weighted average exercise price outstanding, beginning balance |
$ 0.18us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1 / us-gaap_AwardTypeAxis = us-gaap_WarrantMember |
| Weighted average exercise price outstanding, ending balance |
$ 0.18us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1 / us-gaap_AwardTypeAxis = us-gaap_WarrantMember |
| Weighted average exercise price exercisable |
$ 0.18us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue / us-gaap_AwardTypeAxis = us-gaap_WarrantMember |
| Weighted average fair value per share outstanding, beginning balance |
$ 0.065us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue / us-gaap_AwardTypeAxis = us-gaap_WarrantMember |
| Weighted average fair value per share outstanding, ending balance |
$ 0.065us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue / us-gaap_AwardTypeAxis = us-gaap_WarrantMember |
| Weighted average fair value per share exercisble |
$ 0.066pmcb_WeightedAverageFairValuePerShareExercisble / us-gaap_AwardTypeAxis = us-gaap_WarrantMember |
| Range of Exercise Prices, warrants | $0.075, $0.12, $0.18 and $0.25 |
| Number outstanding |
57,969,908us-gaap_ClassOfWarrantOrRightOutstanding / us-gaap_AwardTypeAxis = us-gaap_WarrantMember |
| Weighted average contractual life | 2 years 11 months 8 days |
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- Definition
Range of Exercise Prices, warrants No definition available.
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- Definition
Weighted average fair value per share exercisble No definition available.
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- Definition
Exercise price per share or per unit of warrants or rights outstanding. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Number of warrants or rights outstanding. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The weighted average fair value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Weighted average remaining contractual term for equity-based awards excluding options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Number of non-option equity instruments exercised by participants. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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