Share-based compensation - Narrative (Details) - Plan - USD ($) |
3 Months Ended | ||
|---|---|---|---|
Jun. 16, 2022 |
Mar. 31, 2023 |
Mar. 31, 2022 |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||
| Number of additional shares authorized | 1,250,000 | ||
| Shares authorized | 2,062,500 | ||
| Shares available for future grant | 442,853 | ||
| Intrinsic value of options outstanding | $ 57,590 | ||
| Stock options | |||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||
| Share-based compensation expense | 161,697 | $ 131,906 | |
| Unrecognized compensation expense | $ 952,376 | ||
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- Definition Amount of expense for award under share-based payment arrangement. Excludes amount capitalized. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of cost not yet recognized for nonvested award under share-based payment arrangement. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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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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- Definition Number of additional shares authorized for issuance under share-based payment arrangement. No definition available.
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- Definition Number of shares authorized for issuance under share-based payment arrangement. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Details
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- Details
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