XML 49 R35.htm IDEA: XBRL DOCUMENT
v3.25.2

Stockholders' Equity (Tables) | 6 Months Ended
--- | ---
Jun. 30, 2025
Stockholders' Equity |
Schedule of weighted average assumptions | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | 2025 |  | 2024 |  | 2023 |
Expected life (years) |  | N/A |  | N/A | ​ | 1.0 | ​
Expected volatility |  | N/A | % | N/A | % | 95 | %
Dividend yield |  | N/A | % | N/A | % | — | %
Risk-free interest rate |  | N/A | % | N/A | % | 4.7 | %
Schedule of stock option activity | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Plan Shares |  | ​ |  | Weighted Average |  | ​ | ​
​ | ​ | Available | ​ | Plan Options | ​ | Exercise Price | ​ | Aggregate
​ | ​ | for Grant |  | Outstanding |  | Per Share |  | Intrinsic Value
Balance at January 1, 2023 |  | 92,862 |  | 14,086 | ​ | $ | 14.17 | ​ | ​ | ​
Cancelled or forfeited options |  | 12,623 |  | (12,623) | ​ |  | 14.02 | ​ |  |
Balance at December 31, 2023 |  | 105,485 |  | 1,463 | ​ |  | 15.54 | ​ |  |
Restricted stock units and awards granted |  | (27,000) |  | — | ​ |  | 5.64 |  | ​ |
Cancelled or forfeited options |  | 1,463 |  | (1,463) | ​ |  | 15.54 | ​ |  |
Balance at December 31, 2024 |  | 79,948 |  | — | ​ |  | — | ​ |  |
Restricted stock units and awards granted |  | — |  | — | ​ |  | — |  | ​ |
Balance at June 30, 2025 |  | 79,948 |  | — | ​ |  | — | ​ |  |
Schedule of restricted stock and restricted stock unit activity | ​
​ | ​ | ​ | ​ | ​ | ​
​ |  | ​ |  | Weighted average
​ |  | Number of Shares |  | grant date fair value
Unvested shares at January 1, 2023 |  | 5,869 | ​ | $ | 9.21
Granted |  | — | ​ |  | ​
Vested |  | (5,869) | ​ |  | 7.66
Unvested shares at December 31, 2023 |  | — | ​ | $ | —
Granted |  | 27,000 | ​ | ​ | 5.64
Vested |  | — | ​ |  | —
Unvested shares at December 31, 2024 |  | 27,000 | ​ | $ | 5.64
Granted |  | — | ​ | ​ | —
Vested |  | (9,000) | ​ |  | 5.64
Unvested shares at June 30, 2025 |  | 18,000 | ​ | $ | 5.64

X
- Definition Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year. + 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 + Details
Name: | us-gaap_ScheduleOfShareBasedCompensationRestrictedStockUnitsAwardActivityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- 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
Name: | us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- 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
Name: | us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_StockholdersEquityNoteAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration