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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Cash and Cash Equivalents (Details) $ in Thousands	Dec. 31, 2021 USD ($) item
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
Number of banks exceeding the FDIC limit | item	1
Cash in excess of FDIC limit | $	$ 490

X

- 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

X

- References

No definition available.

+ Details

Name:	us-gaap_AccountingPoliciesAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- 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