Annual report pursuant to Section 13 and 15(d)

Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity (Details)

v2.4.1.9
Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity (Details) (Restricted Stock [Member], USD $)
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Restricted Stock [Member]
   
Total awards outstanding beginning of the period   43,032us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
Weighted average grant date fair value total awards outstanding beginning of the period   $ 6.49us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
Units granted 0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
Weighted average grant date fair value units Granted $ 0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
$ 0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
Units Exercised/Released (14,293)ltbr_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExercisedInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
(28,739)ltbr_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExercisedInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
Weighted average grant date fair value units exercised/released $ 5.47ltbr_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExercisesInPeriodWeightedAverageGrantDateFai
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
$ 6.99ltbr_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExercisesInPeriodWeightedAverageGrantDateFai
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
Units Cancelled/Forfeited 0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
Weighted average grant date fair value units Cancelled/Forfeited   $ 0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
Total awards outstanding at end of period 0ltbr_ShareBasedCompensationArrangementByShareBasedPaymantAwardEquityInstrumentsOtherThanOptions
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
14,293ltbr_ShareBasedCompensationArrangementByShareBasedPaymantAwardEquityInstrumentsOtherThanOptions
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
Weighted Average Grant Date Fair value, Total awards outstanding at end of period $ 0ltbr_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsWeightedAverageGrantDateFairValuePeriod
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
$ 5.47ltbr_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsWeightedAverageGrantDateFairValuePeriod
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember