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Stockholders Equity and StockBased Compensation (Details 7) - Restricted Stock Units (RSUs) [Member] | Sep. 30, 2021 shares
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2021 | 78,617
2022 | 78,616
2023 | 78,617
Total | 235,850

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Namespace Prefix: | ltbr_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

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Namespace Prefix: | ltbr_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

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Namespace Prefix: | ltbr_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

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- References No definition available. + Details
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Namespace Prefix: | ltbr_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |