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Goodwill (Notes) | 9 Months Ended
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Sep. 30, 2020
Goodwill and Intangible Assets Disclosure [Abstract] |
Goodwill | GOODWILL The following table presents changes in goodwill in the accompanying Consolidated Balance Sheet for the year ended December 31, 2019 and the nine months ended September 30, 2020 (in thousands):
| December 31, 2019 |  | September 30, 2020
Goodwill at the beginning of the period | $ | 303,887 |  |  | $ | 398,292 |
Net increase in goodwill related to acquisitions | 99,344 |  |  | 14,210 |
Decrease in goodwill related to divestitures | (4,939) |  |  | (4,387) |
Decrease in goodwill related to impairments | — |  |  | (13,632) |
Goodwill at the end of the period | $ | 398,292 |  |  | $ | 394,483 |
See Notes 1, 3 and 5 to the Consolidated Financial Statements included herein, for a discussion of the methodology used for our goodwill impairment test and a discussion of our acquisitions and divestitures, respectively.

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