Income taxes: (Details) - Net Deferred Income Tax Asset - USD ($) |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2019 |
Dec. 31, 2018 |
Dec. 31, 2017 |
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| Net Deferred Income Tax Asset [Abstract] | |||
| Net operating loss carried forward | $ 44,625,741 | $ 42,136,043 | $ 39,717,436 |
| Tax rate | 21.00% | 21.00% | 34.00% |
| Deferred income tax assets | $ 9,371,406 | $ 8,848,569 | $ 13,503,928 |
| Valuation allowance | (9,371,406) | (8,848,569) | (13,503,928) |
| Net deferred income tax asset | $ 0 | $ 0 | $ 0 |
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- References No definition available.
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- Definition Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, with jurisdictional netting. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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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://fasb.org/us-gaap/role/ref/legacyRef
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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://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Percentage of domestic federal statutory tax rate applicable to pretax income (loss). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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