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Schedule of Deferred Tax Assets and Liabilities (Details) (Approximations [Member], USD $)
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Dec. 31, 2014
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Dec. 31, 2013
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|---|---|---|
| Capitalized start up costs | $ 4,100,000ltbr_CapitalizedStartUpCosts | $ 4,600,000ltbr_CapitalizedStartUpCosts |
| Share based compensation | 17,800,000ltbr_DeferredTaxAssetsShareBasedCompensation | 17,600,000ltbr_DeferredTaxAssetsShareBasedCompensation |
| Net operating loss carry-forward | 45,600,000us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsDomestic | 40,500,000us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsDomestic |
| Less: valuation allowance | (67,500,000)us-gaap_DeferredTaxAssetsValuationAllowance | (62,700,000)us-gaap_DeferredTaxAssetsValuationAllowance |
| Deferred Tax Assets, Net, Total | 0us-gaap_DeferredTaxAssetsNet | 0us-gaap_DeferredTaxAssetsNet |
| Deferred Tax Asset Amount [Member] | ||
| Capitalized start up costs |
1,600,000ltbr_CapitalizedStartUpCosts / us-gaap_StatementScenarioAxis = ltbr_ApproximationsMember / us-gaap_ValuationAllowanceByDeferredTaxAssetAxis = ltbr_DeferredTaxAssetAmountMember |
1,800,000ltbr_CapitalizedStartUpCosts / us-gaap_StatementScenarioAxis = ltbr_ApproximationsMember / us-gaap_ValuationAllowanceByDeferredTaxAssetAxis = ltbr_DeferredTaxAssetAmountMember |
| Share based compensation |
7,100,000ltbr_DeferredTaxAssetsShareBasedCompensation / us-gaap_StatementScenarioAxis = ltbr_ApproximationsMember / us-gaap_ValuationAllowanceByDeferredTaxAssetAxis = ltbr_DeferredTaxAssetAmountMember |
7,000,000ltbr_DeferredTaxAssetsShareBasedCompensation / us-gaap_StatementScenarioAxis = ltbr_ApproximationsMember / us-gaap_ValuationAllowanceByDeferredTaxAssetAxis = ltbr_DeferredTaxAssetAmountMember |
| Net operating loss carry-forward |
18,200,000us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsDomestic / us-gaap_StatementScenarioAxis = ltbr_ApproximationsMember / us-gaap_ValuationAllowanceByDeferredTaxAssetAxis = ltbr_DeferredTaxAssetAmountMember |
16,200,000us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsDomestic / us-gaap_StatementScenarioAxis = ltbr_ApproximationsMember / us-gaap_ValuationAllowanceByDeferredTaxAssetAxis = ltbr_DeferredTaxAssetAmountMember |
| Less: valuation allowance |
(26,900,000)us-gaap_DeferredTaxAssetsValuationAllowance / us-gaap_StatementScenarioAxis = ltbr_ApproximationsMember / us-gaap_ValuationAllowanceByDeferredTaxAssetAxis = ltbr_DeferredTaxAssetAmountMember |
(25,000,000)us-gaap_DeferredTaxAssetsValuationAllowance / us-gaap_StatementScenarioAxis = ltbr_ApproximationsMember / us-gaap_ValuationAllowanceByDeferredTaxAssetAxis = ltbr_DeferredTaxAssetAmountMember |
| Deferred Tax Assets, Net, Total |
$ 0us-gaap_DeferredTaxAssetsNet / us-gaap_StatementScenarioAxis = ltbr_ApproximationsMember / us-gaap_ValuationAllowanceByDeferredTaxAssetAxis = ltbr_DeferredTaxAssetAmountMember |
$ 0us-gaap_DeferredTaxAssetsNet / us-gaap_StatementScenarioAxis = ltbr_ApproximationsMember / us-gaap_ValuationAllowanceByDeferredTaxAssetAxis = ltbr_DeferredTaxAssetAmountMember |
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- Definition
Capitalized start up costs No definition available.
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| X | ||||||||||
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- Definition
Share based compensation No definition available.
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| X | ||||||||||
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- Definition
Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible domestic operating loss carryforwards. Excludes state and local operating loss carryforwards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Details
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