GOODWILL AND OTHER INTANGIBLE ASSETS (Tables)

12 Months Ended

Dec. 31, 2023

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of the Carrying Amount of Goodwill

Changes in the carrying amount of goodwill consist of the following activity for the years ended December 31, 2023, 2022 and 2021 (in thousands):

Balance at December 31, 2020	$	1,428,610
Acquisitions	48,954
Balance at December 31, 2021	$	1,477,564
Acquisitions	54,543
Purchase accounting adjustments	1,317
Balance at December 31, 2022	$	1,533,424
Acquisitions	6,998
Purchase accounting adjustments	(176)
Balance at December 31, 2023	$	1,540,246

Schedule of Carrying Amount and Accumulated Amortization of Intangible Assets

The carrying amount and accumulated amortization of intangible assets consist of the following as of December 31, 2023 and 2022 (in thousands):

	December 31, 2023		December 31, 2022
Gross intangible assets:
Referral sources	$	514,388	$	509,646
Trademarks/names	39,136		38,508
Other amortizable intangible assets	995		912
Total gross intangible assets	554,519		549,066
Accumulated amortization:
Referral sources	(199,084)		(167,902)
Trademarks/names	(19,698)		(16,901)
Other amortizable intangible assets	(341)		(148)
Total accumulated amortization	(219,123)		(184,951)
Total intangible assets, net	$	335,396	$	364,115

Schedule of Future Amortization Expense for Intangible Assets

Expected future amortization expense for intangible assets recorded at December 31, 2023, is as follows (in thousands):

	Amount
2024	$	34,386
2025	34,176
2026	34,071
2027	33,931
2028	33,881
2029 and beyond	164,951
Total	$	335,396