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Stock incentive plans, Stock incentive plans (Details) | 12 Months Ended
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Dec. 31, 2023 Plan shares
Stock incentive plans [Abstract] |
Number of stock incentive plans | Plan | 2
Stock Options [Member] |
Stock incentive plans [Abstract] |
Exercise price as a percentage of fair market value of common stock at date of grant | 100.00%
Term of award | 10 years
Stock Options [Member] | Minimum [Member] |
Stock incentive plans [Abstract] |
Vesting period | 2 years
Stock Options [Member] | Maximum [Member] |
Stock incentive plans [Abstract] |
Vesting period | 4 years
2014 Equity Incentive Plan [Member] |
Stock incentive plans [Abstract] |
Number of shares authorized (in shares) | 2,900,000
Number of shares available for grant (in shares) | 981,769
2014 Equity Incentive Plan [Member] | Stock Options [Member] |
Stock incentive plans [Abstract] |
Term of award | 10 years

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- Definition The exercise price of awards granted under the plans as a percentage of the fair market value of the Company's common stock at the date of grant. + References No definition available. + Details
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- Definition Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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- Definition Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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