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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Cash and Cash Equivalents (Details) $ in Thousands | Dec. 31, 2019 USD ($) item
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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES |
Number of banks exceeding the FDIC limit | item | 1
Cash in excess of FDIC limit | $ | $ 1,531

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- Definition Number of banks holding cash in cash of the FDIC limit as of the balance sheet date. + References No definition available. + Details
Name: | legh_NumberOfBanksHoldingCashInExcessOfFdicLimit
Namespace Prefix: | legh_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

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

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- Definition The amount of cash as of the balance sheet date that is not insured by the Federal Deposit Insurance Corporation. + References No definition available. + Details
Name: | us-gaap_CashUninsuredAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant