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Stock-Based Compensation, Equity Compensation Plans (Details) - shares | 6 Months Ended | 12 Months Ended |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Jun. 30, 2024 | Dec. 31, 2014 | Jan. 22, 2024 | Jul. 14, 2023 | May 17, 2022 | Dec. 08, 2020 | Jun. 17, 2019 | Mar. 31, 2019
The Plans [Member] | Incentive Stock Options [Member] |  |  |  |  |  |  |  |
Stock Options [Abstract] |  |  |  |  |  |  |  |
Vesting period | 4 years |  |  |  |  |  |  |
The Plans [Member] | Incentive Stock Options [Member] | Maximum [Member] |  |  |  |  |  |  |  |
Stock Options [Abstract] |  |  |  |  |  |  |  |
Term of option | 10 years |  |  |  |  |  |  |
2014 Equity Incentive Plan [Member] |  |  |  |  |  |  |  |
Stock Options [Abstract] |  |  |  |  |  |  |  |
Number of shares authorized for issuance (in shares) |  | 91,367 |  | 6,565,535 |  | 4,165,535 |  | 826,292
Percentage of Common Stock outstanding used to determine annual increase in the plan limit |  | 4.00% |  |  |  |  |  |
Shares available for grant (in shares) | 2,301,167 |  |  |  |  |  |  |
2019 Inducement Plan [Member] |  |  |  |  |  |  |  |
Stock Options [Abstract] |  |  |  |  |  |  |  |
Shares available for grant (in shares) | 969,407 |  |  |  |  |  |  |
Common stock reserved for issuance (in shares) |  |  | 2,100,000 |  | 1,100,000 | 500,000 | 200,000 |

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- Definition Refers to the percentage of stock outstanding as of the immediately preceding December 31st used to determine the annual increase in the Plan limit for authorized shares that may be granted as qualified and nonqualified options. + References No definition available. + Details
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- Definition Aggregate number of common shares reserved for future issuance. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 + 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 Number of shares authorized for issuance under share-based payment arrangement. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a)(3) -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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