Income taxes - Components of Deferred Taxes (Details) - USD ($)	Dec. 31, 2020	Dec. 31, 2019
Deferred tax assets:
Net operating loss carryforward	$ 32,183,004	$ 20,536,344
Intangible assets		26,842
Stock compensation	1,358,554
Accrued expenses		17,779
Lease liability - ASC 842	70,192	128,337
Gross deferred tax assets	33,611,750	20,709,302
Valuation allowance	(33,541,533)	(19,676,794)
Total deferred tax assets	70,217	1,032,508
Deferred tax liabilities:
Fixed assets	(1,130)	(1,692)
Stock compensation		(908,322)
Right of use asset	(69,087)	(122,494)
Total deferred tax liabilities	$ (70,217)	$ (1,032,508)

Amount before allocation of valuation allowances of deferred tax asset attributable to lease liability under ASC 842.

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Amount of deferred tax liability attributable to taxable temporary differences from right of use asset.

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Amount of deferred tax liability attributable to taxable temporary differences from stock compensation.

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Amount of deferred tax liability attributable to taxable temporary differences.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from intangible assets including goodwill.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from share-based compensation.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from accrued liabilities.

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Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

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Amount of deferred tax liability attributable to taxable temporary differences from property, plant, and equipment.

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