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Goodwill and Intangible Assets (Tables) | 12 Months Ended
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Dec. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Goodwill | During the years ended December 31, 2018 and 2017, the change in the carrying amount of goodwill was as follows (in thousands):
Balance at January 1, 2017 | $ | 105,732 |
Wyoming Refining acquisition purchase price allocation adjustment (1) | 1,455 |
Balance at December 31, 2017 | 107,187 |
Acquisition of Northwest Retail (1) | 46,210 |
Balance at December 31, 2018 | $ | 153,397 |
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(1) | Please read Note 4—Acquisitions for further discussion.
Schedule of Finite-Lived Intangible Assets | Intangible assets consist of the following (in thousands):
| December 31,
| 2018 |  | 2017
Intangible assets: |  |  |
Railcar leases | $ | 3,249 |  |  | $ | 3,249 |
Trade names and trademarks | 6,267 |  |  | 6,267 |
Customer relationships | 32,064 |  |  | 32,064 |
Total intangible assets | 41,580 |  |  | 41,580 |
Accumulated amortization: |  |  |  |  |
Railcar leases | (3,249 | ) |  | (3,249 | )
Trade name and trademarks | (5,037 | ) |  | (4,951 | )
Customer relationships | (9,347 | ) |  | (6,776 | )
Total accumulated amortization | (17,633 | ) |  | (14,976 | )
Net: |  |  |  |  |
Railcar leases | — |  |  | — |
Trade name and trademarks | 1,230 |  |  | 1,316 |
Customer relationships | 22,717 |  |  | 25,288 |
Total intangible assets, net | $ | 23,947 |  |  | $ | 26,604 |
Finite-lived Intangible Assets Amortization Expense | Expected amortization expense for each of the next five years and thereafter is as follows (in thousands):
Year Ended |  | Amount
2019 |  | $ | 2,658 |
2020 |  | 2,658 |
2021 |  | 2,658 |
2022 |  | 2,658 |
2023 |  | 2,658 |
Thereafter |  | 10,657 |
|  | $ | 23,947 |

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