Summary of significant accounting policies - Concentration of Credit Risk (Details) |
12 Months Ended | |
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Dec. 31, 2019
USD ($)
customer
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Dec. 31, 2018
USD ($)
customer
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| Concentration Risk [Line Items] | ||
| Cash, FDIC Insured Amount | $ | $ 250,000 | |
| Cash, Uninsured Amount | $ | $ 627,676 | $ 0 |
| Customer concentration risk | Revenues | ||
| Concentration Risk [Line Items] | ||
| Number of customer representing more than 10% of revenues or trade accounts receivable | 1 | 0 |
| Number of customers | 500 | |
| Customer concentration risk | Trade accounts receivable | ||
| Concentration Risk [Line Items] | ||
| Number of customer representing more than 10% of revenues or trade accounts receivable | 1 | 1 |
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- Definition Concentration Risk, Number of Significant Customers No definition available.
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- Definition Credit Risk, Number of Customers No definition available.
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- Definition The amount of cash deposited in financial institutions as of the balance sheet date that is insured by the Federal Deposit Insurance Corporation. No definition available.
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- Definition The amount of cash as of the balance sheet date that is not insured by the Federal Deposit Insurance Corporation. No definition available.
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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