CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS (unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Income Statement [Abstract]
TOTAL REVENUE	$ 345,311	$ 312,331	$ 678,281	$ 612,768
OPERATING EXPENSES
Center costs, excluding depreciation and amortization shown separately below	236,880	214,525	460,059	420,236
General and administrative expenses	97,375	95,153	191,806	184,087
Depreciation and amortization	14,006	18,600	27,762	41,164
Total operating expenses	348,261	328,278	679,627	645,487
LOSS FROM OPERATIONS	(2,950)	(15,947)	(1,346)	(32,719)
OTHER EXPENSE
(Loss) gain on remeasurement of contingent consideration	0	(55)	0	1,960
Transaction costs	0	(792)	0	(792)
Interest expense, net	(2,900)	(5,823)	(5,973)	(11,726)
Other expense	(92)	(4)	(93)	(78)
Total other expense	(2,992)	(6,674)	(6,066)	(10,636)
LOSS BEFORE INCOME TAXES	(5,942)	(22,621)	(7,412)	(43,355)
INCOME TAX BENEFIT (PROVISION)	2,151	(656)	4,330	(1,019)
NET LOSS	$ (3,791)	$ (23,277)	$ (3,082)	$ (44,374)
LOSS PER SHARE, Basic	$ (0.01)	$ (0.06)	$ (0.01)	$ (0.12)
LOSS PER SHARE, Diluted	$ (0.01)	$ (0.06)	$ (0.01)	$ (0.12)
Weighted-average shares outstanding - Basic	386,733	379,427	385,015	377,880
Weighted-average shares outstanding - Diluted	386,733	379,427	385,015	377,880
NET LOSS	$ (3,791)	$ (23,277)	$ (3,082)	$ (44,374)
OTHER COMPREHENSIVE (LOSS) INCOME
Unrealized (losses) gains on cash flow hedge, net of tax	(267)	(243)	(584)	340
COMPREHENSIVE LOSS	$ (4,058)	$ (23,520)	$ (3,666)	$ (44,034)