Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2024

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of carrying amount of goodwill

The following table shows changes in the carrying amounts of goodwill by reporting unit for the years ended December 31, 2024 and 2023:

	Centers		Onsites		Other Businesses		Total
	(in thousands)
Balance as of January 1, 2023	$	1,137,997	$	50,940	$	36,934	$	1,225,871
Acquisition of businesses	3,874		—		—		3,874
Balance as of December 31, 2023	1,141,871		50,940		36,934		1,229,745
Acquisition of businesses	4,962		—		—		4,962
Balance as of December 31, 2024	$	1,146,833	$	50,940	$	36,934	$	1,234,707

Schedule of gross carrying amounts, accumulated amortization, and net carrying value for identifiable intangible assets

The general range of useful lives is as follows:

Customer relationships	5 – 15 years
Non-compete agreements	1 – 15 years

The following table provides the gross carrying amounts, accumulated amortization, and net carrying amounts for the Company’s identifiable intangible assets:

	December 31,
	2024						2023
	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
	(in thousands)
Indefinite-lived intangible assets:
Trademarks	$	104,900	$	—	$	104,900	$	104,900	$	—	$	104,900
Finite-lived intangible assets:
Trademarks	5,000		(5,000)		—		5,000		(5,000)		—
Customer relationships	320,161		(222,522)		97,639		317,571		(200,312)		117,259
Non-compete agreements	7,749		(5,563)		2,186		7,084		(4,474)		2,610
Total identifiable intangible assets	$	437,810	$	(233,085)	$	204,725	$	434,555	$	(209,786)	$	224,769

Schedule of gross carrying amounts, accumulated amortization, and net carrying value for identifiable intangible assets

The following table provides the gross carrying amounts, accumulated amortization, and net carrying amounts for the Company’s identifiable intangible assets:

	December 31,
	2024						2023
	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
	(in thousands)
Indefinite-lived intangible assets:
Trademarks	$	104,900	$	—	$	104,900	$	104,900	$	—	$	104,900
Finite-lived intangible assets:
Trademarks	5,000		(5,000)		—		5,000		(5,000)		—
Customer relationships	320,161		(222,522)		97,639		317,571		(200,312)		117,259
Non-compete agreements	7,749		(5,563)		2,186		7,084		(4,474)		2,610
Total identifiable intangible assets	$	437,810	$	(233,085)	$	204,725	$	434,555	$	(209,786)	$	224,769

Schedule of future estimated amortization expense for finite-lived intangible assets

Estimated amortization expense of the Company’s finite-lived intangible assets for each of the five succeeding years is as follows:

	2025		2026		2027		2028		2029
					(in thousands)
Amortization expense	$	15,525	$	14,309	$	13,247	$	12,009	$	11,127