GOODWILL AND OTHER INTANGIBLE ASSETS

3 Months Ended

Mar. 31, 2023

Goodwill and Intangible Assets Disclosure [Abstract]

GOODWILL AND OTHER INTANGIBLE ASSETS

GOODWILL AND OTHER INTANGIBLE ASSETS

Changes in the carrying amount of goodwill consists of the following activity for the three months ended March 31, 2023 (in thousands):

Balance at December 31, 2022	$	1,533,424
Purchase accounting adjustments	145
Balance at March 31, 2023	$	1,533,569

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

	March 31, 2023		December 31, 2022
Gross intangible assets:
Referral sources	$	509,646	$	509,646
Trademarks/names	38,508		38,508
Other amortizable intangible assets	912		912
Total gross intangible assets	549,066		549,066
Accumulated amortization:
Referral sources	(175,645)		(167,902)
Trademarks/names	(17,548)		(16,901)
Other amortizable intangible assets	(195)		(148)
Total accumulated amortization	(193,388)		(184,951)
Total intangible assets, net	$	355,678	$	364,115

Amortization expense for intangible assets was $8.5 million and $7.5 million for the three months ended March 31, 2023 and 2022, respectively.