Fair Value Measurements - Additional Information (Details)	Jun. 30, 2022 USD ($)
Fair Value Disclosures [Abstract]
Materail assets or liabilities measured at fair value on a recurring basis	$ 0

Financial assets and liabilities fair value recurring.

No definition available.

Name:	lfst_FinancialAssetsAndLiabilitiesFairValueRecurring
Namespace Prefix:	lfst_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant