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Backlog (Details Textual) - USD ($) $ in Millions | Jun. 30, 2018 | Dec. 31, 2017
--- | --- | ---
Construction [Member] |  |
Estimated Revenue From Uncompleted Contract | $ 445.3 |
Construction [Member] | Predecessor [Member] |  |
Estimated Revenue From Uncompleted Contract |  | $ 426.7
Service [Member] |  |
Estimated Revenue From Uncompleted Contract | $ 47.2 |
Service [Member] | Predecessor [Member] |  |
Estimated Revenue From Uncompleted Contract |  | $ 34.7

X
- Definition This element represent the estimated revenue from uncompleted contract. + References No definition available. + Details
Name: | lmb_EstimatedRevenueFromUncompletedContract
Namespace Prefix: | lmb_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=us-gaap_ConstructionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementScenarioAxis=us-gaap_PredecessorMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=us-gaap_ServiceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |