Income taxes - Reconciliation of Federal Statutory Income Tax Provision to Company's Actual Provision (Details) - USD ($) |
12 Months Ended | |
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Dec. 31, 2016 |
Dec. 31, 2015 |
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| Income Tax Disclosure [Line Items] | ||
| Federal statutory income tax rate (percent) | 34.00% | |
| Pre-tax book income | $ (2,800,960) | |
| Income Tax Provision | ||
| Income Tax Disclosure [Line Items] | ||
| Pre-tax book income | $ (1,161,245) | (2,800,960) |
| Expected tax at 34% | (394,823) | (952,326) |
| Machinery & equipment | 5,459 | 5,251 |
| Other | 754 | 444 |
| Current | 0 | 0 |
| Deferred | (96,754) | 120,931 |
| Federal research and development credits | (15,996) | (16,504) |
| Change in valuation allowance | 96,754 | (120,931) |
| Deferred tax past year true-up's | (8,584) | (47,242) |
| Unbenefited operating losses | 413,190 | 1,010,377 |
| Income tax provision | $ 0 | $ 0 |
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- Definition Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount, Current No definition available.
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- Definition Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount, Deferred No definition available.
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- Definition [Line Items] for Income Tax Disclosure [Table] No definition available.
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- Definition Income Tax Reconciliation, Unbenefited Operating Losses No definition available.
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- Definition Percentage of domestic federal statutory tax rate applicable to pretax income (loss). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to increase (decrease) in the valuation allowance for deferred tax assets. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The amount of income tax expense or benefit for the period computed by applying the domestic federal statutory tax rates to pretax income from continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to nondeductible depreciation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to other nondeductible expenses. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to revisions of previously reported income tax expense (benefit). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to research tax credit. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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