Business Combinations - Additional Information (Details) - Facility	3 Months Ended	6 Months Ended
Jun. 30, 2024	Jun. 30, 2024	Jun. 30, 2023
Business Combinations [Abstract]
Acquisitions of outpatient mental health practices	0	0	3

Acquisitions of outpatient mental health practices.

No definition available.

Name:	lfst_AcquisitionsOfOutpatientMentalHealthPractices
Namespace Prefix:	lfst_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration