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10. Income taxes: (Detail) - Components of the Net Deferred Income Tax Asset (USD $)
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12 Months Ended | |
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Dec. 31, 2012
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Dec. 31, 2011
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| Net operating loss carried forward | $ 28,685,595 | $ 26,123,845 |
| Tax rate | 34.00% | 34.00% |
| Deferred income tax assets | 9,753,102 | 8,882,107 |
| Valuation allowance | $ (9,753,102) | $ (8,882,107) |
| X | ||||||||||
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- Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from deferred income. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The domestic federal statutory tax rate applicable under enacted tax laws to the Company's pretax income from continuing operations for the period. The "statutory" tax rate is the regular tax rate if there are alternative tax systems. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The sum of domestic, foreign and state and local operating loss carryforwards, before tax effects, available to reduce future taxable income under enacted tax laws. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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