Annual report pursuant to Section 13 and 15(d)

Accounts Receivable -Project Revenue and Reimbursable Project Costs (Narrative) (Details)

v2.4.1.9
Accounts Receivable -Project Revenue and Reimbursable Project Costs (Narrative) (Details) (USD $)
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Lloyd Register Contract [Member]    
Major customer revenue percentage 15.00%ltbr_MajorCustomerRevenuePercentage
/ us-gaap_MajorCustomersAxis
= ltbr_LloydRegisterContractMember
 
Approximations [Member]    
Unbilled receivable $ 40,000us-gaap_UnbilledContractsReceivable
/ us-gaap_StatementScenarioAxis
= ltbr_ApproximationsMember
$ 100,000us-gaap_UnbilledContractsReceivable
/ us-gaap_StatementScenarioAxis
= ltbr_ApproximationsMember
Travel costs and reimbursable costs 100,000us-gaap_TravelAndEntertainmentExpense
/ us-gaap_StatementScenarioAxis
= ltbr_ApproximationsMember
100,000us-gaap_TravelAndEntertainmentExpense
/ us-gaap_StatementScenarioAxis
= ltbr_ApproximationsMember
Approximations [Member] | ENEC and FANR Projects [Member]    
Accounts Receivable $ 500,000us-gaap_AccountsReceivableNet
/ us-gaap_MajorCustomersAxis
= ltbr_EnecAndFanrProjectsMember
/ us-gaap_StatementScenarioAxis
= ltbr_ApproximationsMember
$ 400,000us-gaap_AccountsReceivableNet
/ us-gaap_MajorCustomersAxis
= ltbr_EnecAndFanrProjectsMember
/ us-gaap_StatementScenarioAxis
= ltbr_ApproximationsMember
Major customer revenue percentage 81.00%ltbr_MajorCustomerRevenuePercentage
/ us-gaap_MajorCustomersAxis
= ltbr_EnecAndFanrProjectsMember
/ us-gaap_StatementScenarioAxis
= ltbr_ApproximationsMember
95.00%ltbr_MajorCustomerRevenuePercentage
/ us-gaap_MajorCustomersAxis
= ltbr_EnecAndFanrProjectsMember
/ us-gaap_StatementScenarioAxis
= ltbr_ApproximationsMember
Approximations [Member] | FANR [Member]    
Major customer revenue percentage 92.00%ltbr_MajorCustomerRevenuePercentage
/ us-gaap_MajorCustomersAxis
= ltbr_FanrMember
/ us-gaap_StatementScenarioAxis
= ltbr_ApproximationsMember