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v3.21.1

Self-Insurance - Narrative (Details) | 12 Months Ended
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Dec. 31, 2020 USD ($)
Insurance [Abstract] |
Payment to acquire workers' compensation and general liability insurance | $ 250,000
Malpractice insurance, annual coverage limit | $ 4,200,000

X
- Definition This element represent that amount of workers' compensation and general liability insurance purchased by company. + References No definition available. + Details
Name: | lmb_PaymentToAcquireWorkersCompensationAndGeneralLiabilityInsurance
Namespace Prefix: | lmb_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_InsuranceAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Annual coverage limit provided by the insurance arrangement for malpractice claims. + References No definition available. + Details
Name: | us-gaap_MalpracticeInsuranceAnnualCoverageLimit
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration