GOODWILL AND OTHER INTANGIBLE ASSETS

3 Months Ended

Mar. 31, 2022

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, 2022 (in thousands):

Balance at December 31, 2021	$	1,477,564
Purchase accounting adjustments	936
Balance at March 31, 2022	$	1,478,500

There were no changes in the carrying amount of goodwill for the three months March 31, 2021.

The carrying amount and accumulated amortization of intangible assets consists of the following as of March 31, 2022 and December 31, 2021 (in thousands):

	March 31, 2022		December 31, 2021
Gross intangible assets:
Referral sources	$	482,407	$	482,200
Trademarks/names	47,718		47,718
Other amortizable intangible assets	830		1,037
Total gross intangible assets	530,955		530,955
Accumulated amortization:
Referral sources	(144,525)		(137,613)
Trademarks/names	(27,476)		(26,936)
Other amortizable intangible assets	(403)		(386)
Total accumulated amortization	(172,404)		(164,935)
Total intangible assets, net	$	358,551	$	366,020

Amortization expense for intangible assets was $7.5 million and $8.7 million for the three months ended March 31, 2022 and 2021, respectively.