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Goodwill (Tables) | 12 Months Ended
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Dec. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract] |
Changes in Goodwill | The following table presents changes in goodwill in the accompanying Consolidated Balance Sheet (in thousands):
| December 31, 2020 |  | December 31, 2021
Goodwill at the beginning of year | $ | 398,292 |  |  | $ | 392,978 |
Net increase in goodwill related to acquisitions | 14,054 |  |  | — |
Decrease in goodwill related to divestitures | (5,736) |  |  | (1,006) |
Decrease in goodwill related to impairments | (13,632) |  |  | — |
Goodwill at the end of the year | $ | 392,978 |  |  | $ | 391,972 |

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