Income taxes (Details) - USD ($)	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019
Income taxes
Statutory tax rate	21.00%	21.00%
Expected tax benefit	$ (1,232,000)	$ (380,000)
Nondeductible expenses	0	0
Increase in valuation allowance	1,232,000	380,000
Tax provision (benefit) as reported	$ 0	$ 0

No definition available.

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- Definition

Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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No definition available.

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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.

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- Definition

Amount of expense for penalties related to a tax position claimed or expected to be claimed in the tax return.

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