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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

X

- 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: