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GOODWILL | 9 Months Ended
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Sep. 30, 2020
GOODWILL [Abstract] |
GOODWILL | 7. GOODWILL The changes in the carrying amount of goodwill consisted of the following (in thousands):
|  | Nine Months Ended |  |  | Year Ended |
|  | September 30, 2020 |  |  | December 31, 2019 |
Beginning balance |  | $ | 317,676 |  |  | $ | 293,525 |
Goodwill acquired |  |  | 19,824 |  |  |  | 31,330 |
Goodwill related to partnership interest sold |  |  | - |  |  |  | (7,325 | )
Goodwill write-off related to closed clinics |  |  | (1,859 | ) |  |  | - |
Goodwill adjustments for purchase price allocation of businesses acquired in prior year |  |  | 1,305 |  |  |  | 146 |
Ending balance |  | $ | 336,946 |  |  | $ | 317,676 |
The derecognition (write-off) o f goodwill in the amount of $1.9 million was related to certain clinics that have been permanently closed.

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- Definition The entire disclosure for goodwill. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -URI http://asc.fasb.org/subtopic&trid=2144439 + Details
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