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Impairments and Other Charges (Tables) | 9 Months Ended
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Sep. 30, 2020
Impairments and Other Charges [Abstract] |
Changes in Goodwill | The following table summarizes the changes in goodwill (in thousands):
|  | Marine Transportation |  |  | Distribution and Services |  |  | Total |
Balance at December 31, 2019 (gross) |  | $ | 424,149 |  |  | $ | 549,846 |  |  | $ | 973,995 |
Accumulated impairment and amortization |  |  | (18,574 | ) |  |  | (1,595 | ) |  |  | (20,169 | )
Balance at December 31, 2019 |  |  | 405,575 |  |  |  | 548,251 |  |  |  | 953,826 |
Impairment |  |  | — |  |  |  | (387,970 | ) |  |  | (387,970 | )
Savage acquisition |  |  | 81,635 |  |  |  | — |  |  |  | 81,635 |
Convoy acquisition |  |  | — |  |  |  | 10,309 |  |  |  | 10,309 |
Balance at September 30, 2020 (gross) |  |  | 505,784 |  |  |  | 560,155 |  |  |  | 1,065,939 |
Accumulated impairment and amortization |  |  | (18,574 | ) |  |  | (389,565 | ) |  |  | (408,139 | )
Balance at September 30, 2020 |  | $ | 487,210 |  |  | $ | 170,590 |  |  | $ | 657,800 |

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- Definition Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=121556970&loc=d3e13854-109267 + Details
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