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Prepaid Expenses & Other Current Assets (Narrative) (Details) (Approximations [Member], USD $)
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Dec. 31, 2014
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Dec. 31, 2013
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Approximations [Member]
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| Prepaid Expense and Other Assets, Current |
$ 200,000us-gaap_PrepaidExpenseAndOtherAssetsCurrent / us-gaap_StatementScenarioAxis = ltbr_ApproximationsMember |
$ 300,000us-gaap_PrepaidExpenseAndOtherAssetsCurrent / us-gaap_StatementScenarioAxis = ltbr_ApproximationsMember |
| Security Deposit |
$ 30,000us-gaap_SecurityDeposit / us-gaap_StatementScenarioAxis = ltbr_ApproximationsMember |
| X | ||||||||||
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- Definition
Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, and amount of other assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The amount of an asset, typically cash, provided to a counterparty to provide certain assurance of performance by the entity pursuant to the terms of a written or oral agreement, such as a lease. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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