Annual report pursuant to Section 13 and 15(d)

Income taxes - Reconciliation of Federal Statutory Income Tax Provision to Company's Actual Provision (Details)

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Income taxes - Reconciliation of Federal Statutory Income Tax Provision to Company's Actual Provision (Details) - USD ($)
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Income Tax Disclosure [Line Items]    
Federal statutory income tax rate (percent) 21.00%  
Pre-tax book income $ (4,779,179) $ (5,768,378)
Income tax provision 15,194 32,748
Income Tax Provision    
Income Tax Disclosure [Line Items]    
Pre-tax book income   (5,768,378)
Expected tax at 21% (1,008,353) (1,211,359)
Machinery & equipment 3,728 4,658
Mark to market 4,133 24,798
Goodwill impairment 775,572 922,024
Intangible Amortization (105,573) (180,780)
Stock compensation 0 0
Non-deductible interest 0 0
Other (3,044) 876
Current 15,194 32,748
Deferred (110,517) (120,477)
Federal research and development credits (48,153) (35,550)
Change in valuation allowance 1,479,000 (153,000)
Deferred tax past year true-up's (30,981) (99,348)
True up - ADG NOL IRC Sec 382 limitation 0 817,198
Other (955,812) 30,960
Income tax provision $ 15,194 $ 32,748