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Goodwill and Other Intangibles | 12 Months Ended
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Dec. 31, 2017
Goodwill and Intangible Assets Disclosure [Abstract] |
Goodwill and Other Intangibles | Goodwill and Other Intangibles Goodwill The carrying amounts for goodwill and changes in the carrying value were as follows:
(in thousands) |  | For the Year Ended December 31,
|  |  |  |  |  | 2015 |  | 2014
|  | 2017 |  | 2016 |  | (Restated) |  | (Restated)
Balance at beginning of year, net |  | $ | 29,835 |  |  | $ | 29,835 |  |  | $ | 23,414 |  |  | $ | — |
Acquisitions |  | — |  |  | — |  |  | 18,054 |  |  | 23,414 |
Impairment losses |  | — |  |  | — |  |  | (11,633 | ) |  | — |
Balance at end of year, net |  | $ | 29,835 |  |  | $ | 29,835 |  |  | $ | 29,835 |  |  | $ | 23,414 |
Accumulated impairment losses |  | $ | (11,633 | ) |  | $ | (11,633 | ) |  | $ | — |  |  | $ | — |
During 2015, the Company’s 3PI reporting unit was impacted by depressed oil and gas prices and lower demand from existing customers, which contributed to continued sales and profitability reductions over historic experience and prior forecasts. In the fourth quarter of 2015, the Company performed its annual impairment assessment, utilizing the income approach, based on discounted cash flows derived from internal forecasts and the Company's specific risk premium. It was determined that the carrying value of the 3PI reporting unit, including goodwill, exceeded its fair value. As a result, the Company compared the implied fair value of the reporting unit’s goodwill with the carrying amount of that goodwill, which resulted in the recognition of an impairment charge of $11.6 million. See Note 2. Restatement of Previously Issued Consolidated Financial Statements for additional information. Other Intangible Assets Components of intangible assets are as follows:
(in thousands, except weighted-average useful life) |  |  | As of December 31, 2017
|  | Weighted-Average Useful Life (in years) |  | Gross Carrying Value |  | Accumulated Amortization |  | Net Book Value
Customer relationships |  | 10.0 |  | $ | 34,940 |  |  | $ | (14,915 | ) |  | $ | 20,025 |
Developed technology |  | 4.2 |  | 1,000 |  |  | (434 | ) |  | 566 |
Trade names and trademarks |  | 6.1 |  | 1,700 |  |  | (800 | ) |  | 900 |
Total |  |  |  | $ | 37,640 |  |  | $ | (16,149 | ) |  | $ | 21,491 |
(in thousands, except weighted-average useful life) |  |  | As of December 31, 2016
|  | Weighted-Average Useful Life (in years) |  | Gross Carrying Value |  | Accumulated Amortization |  | Net Book Value
Customer relationships |  | 10.8 |  | $ | 34,940 |  |  | $ | (10,430 | ) |  | $ | 24,510 |
Developed technology |  | 8.3 |  | 700 |  |  | (287 | ) |  | 413 |
Trade names and trademarks |  | 6.8 |  | 1,700 |  |  | (594 | ) |  | 1,106 |
Total |  |  |  | $ | 37,340 |  |  | $ | (11,311 | ) |  | $ | 26,029 |
(in thousands, except weighted-average useful life) |  | As of December 31, 2015
|  | Weighted-Average Useful Life (in years) |  | Gross Carrying Value |  | Accumulated Amortization |  | Net Book Value
|  |  |  | (Restated) |  | (Restated) |  | (Restated)
Backlog |  |  |  | $ | 1,800 |  |  | $ | (1,800 | ) |  | $ | — |
Customer relationships |  | 11.5 |  | 34,940 |  |  | (5,129 | ) |  | 29,811 |
Developed technology |  | 8.2 |  | 700 |  |  | (113 | ) |  | 587 |
Trade names and trademarks |  | 7.5 |  | 1,700 |  |  | (353 | ) |  | 1,347 |
Total |  |  |  | $ | 39,140 |  |  | $ | (7,395 | ) |  | $ | 31,745 |
(in thousands, except weighted-average useful life) |  | As of December 31, 2014
|  | Weighted-Average Useful Life (in years) |  | Gross Carrying Value |  | Accumulated Amortization |  | Net Book Value
|  |  |  | (Restated) |  | (Restated) |  | (Restated)
Backlog |  | 1.0 |  | $ | 1,200 |  |  | $ | (1,095 | ) |  | $ | 105 |
Customer relationships |  | 21.0 |  | 20,400 |  |  | (926 | ) |  | 19,474 |
Trade names and trademarks |  | 8.3 |  | 1,700 |  |  | (87 | ) |  | 1,613 |
Total |  |  |  | $ | 23,300 |  |  | $ | (2,108 | ) |  | $ | 21,192 |
Amortization expense was classified as follows in the Consolidated Statements of Operations:
(in thousands) |  | For the Year Ended December 31,
|  |  |  |  |  | 2015 |  | 2014
|  | 2017 |  | 2016 |  | (Restated) |  | (Restated)
Cost of sales |  | $ | — |  |  | $ | — |  |  | $ | 705 |  |  | $ | 1,095 |
Operating expenses |  | 4,838 |  |  | 5,716 |  |  | 4,582 |  |  | 1,013 |
Total |  | $ | 4,838 |  |  | $ | 5,716 |  |  | $ | 5,287 |  |  | $ | 2,108 |
Estimated future amortization expense for intangible assets as of December 31, 2017 is as follows:
(in thousands) |  |
Year Ending December 31, |  | Estimated Amortization
2018 |  | $ | 4,227 |
2019 |  | 3,698 |
2020 |  | 3,113 |
2021 |  | 2,594 |
2022 |  | 2,184 |
2023 and beyond |  | 5,675 |
Total |  | $ | 21,491 |

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- Definition The entire disclosure for goodwill and intangible assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -URI http://asc.fasb.org/topic&trid=2144416 + Details
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