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Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2020
Summary of Significant Accounting Policies [Abstract] |
Changes in Goodwill | Goodwill. The excess of the purchase price over the fair value of identifiable net assets acquired in transactions accounted for as a purchase is included in goodwill. The Company conducted its annual goodwill impairment tests at November 30, 2020, 2019 and 2018. The Company also conducted an interim goodwill impairment test at March 31, 2020. Refer to Note 7, Impairments and other charges for more information. The Company will continue to conduct goodwill impairment tests as of November 30 of subsequent years, or whenever events or circumstances indicate that interim impairment testing is necessary. The amount of goodwill impairment, if any, is typically measured based on projected discounted future operating cash flows using an appropriate discount rate. The following table summarizes the changes in goodwill (in thousands):
|  | Marine Transportation |  |  | Distribution and Services |  |  | Total |
Balance at December 31, 2017 (gross) |  | $ | 403,376 |  |  | $ | 549,226 |  |  | $ | 952,602 |
Accumulated impairment and amortization |  |  | (15,872 | ) |  |  | (1,595 | ) |  |  | (17,467 | )
Balance at December 31, 2017 |  |  | 387,504 |  |  |  | 547,631 |  |  |  | 935,135 |
Impairment |  |  | (2,702 | ) |  |  | — |  |  |  | (2,702 | )
Higman acquisition |  |  | 4,657 |  |  |  | — |  |  |  | 4,657 |
Targa acquisition |  |  | 16,116 |  |  |  | — |  |  |  | 16,116 |
Other |  |  | — |  |  |  | 620 |  |  |  | 620 |
Balance at December 31, 2018 (gross) |  |  | 424,149 |  |  |  | 549,846 |  |  |  | 973,995 |
Accumulated impairment and amortization |  |  | (18,574 | ) |  |  | (1,595 | ) |  |  | (20,169 | )
Balance at December 31, 2018 |  | $ | 405,575 |  |  | $ | 548,251 |  |  | $ | 953,826 |
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 December 31, 2020 (gross) |  |  | 505,784 |  |  |  | 560,155 |  |  |  | 1,065,939 |
Accumulated impairment and amortization |  |  | (18,574 | ) |  |  | (389,565 | ) |  |  | (408,139 | )
Balance at December 31, 2020 |  | $ | 487,210 |  |  | $ | 170,590 |  |  | $ | 657,800 |
Other Intangible Assets and Other Intangible Liabilities | Other Intangibles. Other intangibles include assets for favorable contracts and customer relationships, distributorship and dealership agreements, trade names and non-compete agreements and liabilities for unfavorable leases and contracts. The following table summarizes the balances of other intangible assets and other intangible liabilities (in thousands):
|  | December 31, |
|  | 2020 |  |  | 2019 |
Other intangible assets – gross |  | $ | 203,217 |  |  | $ | 332,656 |
Accumulated amortization |  |  | (134,238 | ) |  |  | (121,974 | )
Other intangible assets – net |  | $ | 68,979 |  |  | $ | 210,682 |
Other intangible liabilities – gross |  | $ | 13,860 |  |  | $ | 13,860 |
Accumulated amortization |  |  | (10,960 | ) |  |  | (7,956 | )
Other intangible liabilities – net |  | $ | 2,900 |  |  | $ | 5,904 |

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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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