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Share-Based Compensation (Tables) | 6 Months Ended
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Jun. 30, 2025
Share-Based Compensation |
Schedule of options to purchase common stock | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | ​ |  | Weighted |  | ​
​ | ​ | ​ | ​ | average | ​ | Weighted
​ | ​ | ​ | ​ | exercise | ​ | average
​ | ​ | Number of | ​ | price | ​ | contractual
​ | ​ | shares | ​ | per share | ​ | term (years)
Outstanding at December 31, 2023 |  | 85 |  | $ | 387,691.92 |  | 3.7
Granted |  | 2,100 | ​ | ​ | 1,108.80 |  | 9.2
Exercised |  | — | ​ | ​ | — |  | —
Forfeited |  | (83) | ​ | ​ | 13,365.75 |  | —
Outstanding at December 31, 2024 |  | 2,102 | ​ | ​ | 2,206.40 |  | 9.4
Granted |  | — | ​ | ​ | — |  | —
Exercised |  | — | ​ | ​ | — |  | —
Forfeited |  | (63) | ​ |  | 79,207.64 |  | —
Outstanding at June 30, 2025 |  | 2,039 | ​ | $ | 14,404.41 |  | 8.8
Schedule of assumptions to determine the grant-date fair value of options granted | ​
​ | ​ | ​
​ | ​ | Year Ended
​ | ​ | December 31, 2024
Risk-free interest rate |  | 4.44%
Expected term (in years) |  | 6.0
Expected volatility | ​ | 128.8%
Expected dividend yield |  | —
Fair value per share of underlying stock | ​ | $29.68 - $30.24

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- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (d) -SubTopic 10 -Topic 718 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (e) -SubTopic 10 -Topic 718 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 718 -SubTopic 10 -Subparagraph (f)(2) -Name Accounting Standards Codification -Paragraph 2 -Section 50 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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