Annual report pursuant to Section 13 and 15(d)

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

v3.20.4
Income taxes - Reconciliation of Federal Statutory Income Tax Provision to Company's Actual Provision (Details) - USD ($)
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Income Tax Disclosure [Line Items]    
Federal statutory income tax rate (percent) 21.00%  
Pre-tax book income   $ (4,779,179)
Income tax provision $ 30,171 15,194
Income Tax Provision    
Income Tax Disclosure [Line Items]    
Pre-tax book income (6,187,020) (4,779,179)
Expected tax at 21% (1,299,274) (1,008,353)
Mark to market 20,665 4,133
Goodwill impairment 613,677 775,572
Intangible Amortization (84,085) (105,573)
Other 2,757 684
Current 30,171 15,194
Deferred (161,203) (110,517)
Federal research and development credits (13,161) (48,153)
Change in valuation allowance 1,049,000 1,479,000
Deferred tax past year true-up's 11,767 (30,981)
Other (140,143) (955,812)
Income tax provision $ 30,171 $ 15,194