Life Time Group Holdings, Inc. Quarterly report pursuant to Section 13 or 15(d)

Leases - Narrative (Details) $ in Thousands	9 Months Ended
Leases - Narrative (Details) $ in Thousands	Sep. 30, 2023 USD ($) property	Sep. 30, 2022 USD ($)
Leases [Abstract]
Sale-leaseback transaction, number of properties \| property	3
Net book value	$ 141,100
Gross proceeds	124,000
Transaction costs	700
Net proceeds	123,300
Fair value	128,400
Increase in sales price	4,400
Loss on transaction	13,400
Increase	5,900
Proceeds from financing obligations	1,500	$ 0
Right-of-use assets	74,000
Lease liability	$ 67,300