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Basis of Presentation, Summary of Significant Accounting Policies and Nature of Operations (Narrative) (Details) (USD $)
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3 Months Ended | |||
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Mar. 31, 2015
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Mar. 31, 2014
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Dec. 31, 2014
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Dec. 31, 2013
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| Metallic fuel power uprate percentage | 10.00%ltbr_MetallicFuelPowerUpratePercentage | |||
| Operating cycle length - Westinghouse-type | 24 months | |||
| Stock based compensation | $ 81,681us-gaap_ShareBasedCompensation | $ 59,796us-gaap_ShareBasedCompensation | ||
| Cash and Cash Equivalents, at Carrying Value | 3,171,530us-gaap_CashAndCashEquivalentsAtCarryingValue | 2,177,072us-gaap_CashAndCashEquivalentsAtCarryingValue | 4,220,225us-gaap_CashAndCashEquivalentsAtCarryingValue | 3,672,877us-gaap_CashAndCashEquivalentsAtCarryingValue |
| Valuation allowance | 100.00%ltbr_ValuationAllowance | |||
| Research and Development Expense | 212,831us-gaap_ResearchAndDevelopmentExpense | 431,986us-gaap_ResearchAndDevelopmentExpense | ||
| Minimum [Member] | ||||
| Amortization period for patents | 17 years | |||
| Maximum [Member] | ||||
| Federally insured cash limit |
250,000us-gaap_CashFDICInsuredAmount / us-gaap_RangeAxis = us-gaap_MaximumMember |
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| Amortization period for patents | 20 years | |||
| Approximations [Member] | ||||
| Stock based compensation |
100,000us-gaap_ShareBasedCompensation / us-gaap_StatementScenarioAxis = ltbr_ApproximationsMember |
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| Cash and Cash Equivalents, at Carrying Value |
3,200,000us-gaap_CashAndCashEquivalentsAtCarryingValue / us-gaap_StatementScenarioAxis = ltbr_ApproximationsMember |
4,200,000us-gaap_CashAndCashEquivalentsAtCarryingValue / us-gaap_StatementScenarioAxis = ltbr_ApproximationsMember |
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| Restricted Cash |
300,000us-gaap_RestrictedCashAndInvestments / us-gaap_StatementScenarioAxis = ltbr_ApproximationsMember |
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| Percentage of cost of consulting from one firm |
36.00%ltbr_PercentageOfCostOfConsultingFromOneFirm / us-gaap_StatementScenarioAxis = ltbr_ApproximationsMember |
85.00%ltbr_PercentageOfCostOfConsultingFromOneFirm / us-gaap_StatementScenarioAxis = ltbr_ApproximationsMember |
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| Major customer revenue percentage |
78.00%ltbr_MajorCustomerRevenuePercentage / us-gaap_StatementScenarioAxis = ltbr_ApproximationsMember |
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| Research and Development Expense |
$ 200,000us-gaap_ResearchAndDevelopmentExpense / us-gaap_StatementScenarioAxis = ltbr_ApproximationsMember |
$ 400,000us-gaap_ResearchAndDevelopmentExpense / us-gaap_StatementScenarioAxis = ltbr_ApproximationsMember |
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- Definition
Major customer revenue percentage No definition available.
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- Definition
Metallic fuel power uprate percentage No definition available.
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- Definition
Operating cycle length - Westinghouse-type No definition available.
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- Definition
Percentage of cost of consulting from one firm No definition available.
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- Definition
Valuation allowance No definition available.
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- Definition
Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The amount of cash deposited in financial institutions as of the balance sheet date that is insured by the Federal Deposit Insurance Corporation. No definition available.
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- Definition
Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. No definition available.
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- Definition
The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Cash and investments whose use in whole or in part is restricted for the long-term, generally by contractual agreements or regulatory requirements. For use in an unclassified balance sheet. No definition available.
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- Definition
The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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