XML 43 R21.htm IDEA: XBRL DOCUMENT
v3.25.1

Stockholders Equity and StockBased Compensation (Tables) | 3 Months Ended
--- | ---
Mar. 31, 2025
Stockholders Equity and StockBased Compensation |
Schedule Of stock option |
|  | Number of Options |  |  | Weighted Average Exercise Price |  |  | Weighted-Average Remaining Contractual Term (Years) |  |  | Aggregate Intrinsic Value |
Outstanding, December 31, 2024 |  |  | 464,940 |  |  | $ | 16.24 |  |  |  | 3.07 |  |  | $ | 184,818 |
Granted |  |  | 10,448 |  |  |  | 9.42 |  |  |  |  |  |  |  | — |
Exercised |  |  | (45,934 | ) |  |  | 4.80 |  |  |  |  |  |  |  | 310,093 |
Forfeited |  |  | — |  |  |  | — |  |  |  |  |  |  |  | — |
Expired |  |  | — |  |  |  | — |  |  |  |  |  |  |  | — |
Outstanding, March 31, 2025 |  |  | 429,454 |  |  | $ | 17.29 |  |  |  | 2.53 |  |  |  | 469,719 |
Vested and expected to vest, end of the period |  |  | 429,454 |  |  | $ | 17.29 |  |  |  | 2.53 |  |  |  | 469,719 |
Options exercisable, end of the period |  |  | 409,789 |  |  | $ | 17.97 |  |  |  | 2.22 |  |  | $ | 387,153 |
Schedule Of Share-based Compensation, Stock Options, Activity |
|  | Three Months Ended |
|  | March 31, |
|  | 2025 |  |  | 2024 |
Expected volatility |  |  | 117.44 | % |  |  | 75.36 | %
Risk free interest rate |  |  | 3.95 | % |  |  | 4.54 | %
Dividend yield rate |  |  | — |  |  |  | — |
Expected life |  | 2 years |  |  | 2 years |
Closing price per share - common stock |  | $ | 9.42 |  |  | $ | 2.62 |
Schedule Of outstanding RSA |
|  | Number of Shares |  |  | Weighted- Average Grant Date Fair Value |  |  | Aggregate Fair Value |
Outstanding, December 31, 2024 |  |  | 781,864 |  |  | $ | 5.19 |  |  | $ | 3,698,217 |
Awards granted |  |  | 57,940 |  |  |  | 8.63 |  |  |  | 500,022 |
Awards vested |  |  | (96,102 | ) |  |  | 5.67 |  |  |  | 737,535 |
Awards forfeited |  |  | — |  |  |  | — |  |  |  | — |
Outstanding, March 31, 2025 |  |  | 743,702 |  |  | $ | 5.40 |  |  | $ | 5,548,017 |
Schedule of stock based compensation expense |
|  | Three Months Ended |
|  | March 31, |
|  | 2025 |  |  | 2024 |
Research and development expenses |  | $ | 0.2 |  |  | $ | 0.1 |
General and administrative expenses |  |  | 1.1 |  |  |  | 0.4 |
Total stock-based compensation expense |  | $ | 1.3 |  |  | $ | 0.5 |

X
- References No definition available. + Details
Name: | ltbr_ScheduleOfOutstandingRSATableTextBlock
Namespace Prefix: | ltbr_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

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

X
- Definition Tabular disclosure of activity for award under share-based payment arrangement. Includes, but is not limited to, outstanding award at beginning and end of year, granted, exercised, forfeited, 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)(2) -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_ScheduleOfShareBasedCompensationActivityTableTextBlock
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 change in stock options. + References No definition available. + Details
Name: | us-gaap_ScheduleOfStockOptionsRollForwardTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration