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Acquisitions (Tables) | 12 Months Ended
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Dec. 31, 2019
Business Combinations [Abstract] |
Transaction Related Expenses as Incurred | Transaction-related expenses represent costs primarily related to termination, restructuring, strategic review, management transition and other acquisition-related costs. Transaction-related expenses comprised the following costs for the years ended years ended December 31, 2019, 2018 and 2017 (in thousands):
|  | Year Ended December 31, |
|  | 2019 |  |  | 2018 |  |  | 2017 |
Termination, restructuring and strategic review costs |  | $ | 18,233 |  |  | $ | 16,785 |  |  | $ | 19,469 |
Management transition costs |  |  | 5,529 |  |  |  | 14,033 |  |  |  | — |
Legal, accounting and other acquisition-related costs |  |  | 3,302 |  |  |  | 3,689 |  |  |  | 4,798 |
|  | $ | 27,064 |  |  | $ | 34,507 |  |  | $ | 24,267 |

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- Definition Tabular disclosure of transactions that are recognized separately from the acquisition of assets and assumptions of liabilities in the business combination. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463 + Details
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