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Goodwill and Intangible Assets (Tables) | 12 Months Ended
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Dec. 31, 2020
Goodwill And Intangible Assets Disclosure [Abstract] |
Goodwill by Operating Segment | Goodwill — Goodwill by operating segment as of December 31, 2020 and 2019 and changes for the years then ended are as follows (in thousands):
|  | Contract |  |  | Other |  |  |  |  |
|  | Drilling |  |  | Operations |  |  | Total |
Balance, December 31, 2018 |  | $ | 395,060 |  |  | $ | 15,696 |  |  | $ | 410,756 |
Measurement period adjustment |  |  | — |  |  | $ | 2,104 |  |  |  | 2,104 |
Impairment |  |  | — |  |  |  | (17,800 | ) |  |  | (17,800 | )
Balance, December 31, 2019 |  | $ | 395,060 |  |  | $ | — |  |  | $ | 395,060 |
Impairment |  |  | (395,060 | ) |  |  | — |  |  |  | (395,060 | )
Balance, December 31, 2020 |  | $ | — |  |  | $ | — |  |  | $ | — |
Summary of Segment and Weighted Average Useful Life of Intangible Assets | The following table identifies the segment and weighted average useful life of each of our intangible assets:
|  |  |  | Weighted Average
|  | Segment |  | Useful Life
|  |  |  | (in years)
Customer relationships |  | Directional drilling |  | 3.00
Customer relationships |  | Other operations |  | 7.00
Developed technology |  | Directional drilling |  | 5.89
Internal use software |  | Directional drilling |  | 5.00
Gross Carrying Amount and Accumulated Amortization of Intangible Assets | The gross carrying amount and accumulated amortization of intangible assets as of December 31, 2020 and 2019 are as follows (in thousands):
|  | 2020 |  |  | 2019 |
|  | Gross Carrying |  |  | Accumulated |  |  | Net Carrying |  |  | Gross Carrying |  |  | Accumulated |  |  | Net Carrying |
|  | Amount |  |  | Amortization |  |  | Amount |  |  | Amount |  |  | Amortization |  |  | Amount |
Customer relationships |  | $ | 28,000 |  |  | $ | (26,757 | ) |  | $ | 1,243 |  |  | $ | 28,000 |  |  | $ | (19,710 | ) |  | $ | 8,290 |
Developed technology |  |  | 55,772 |  |  |  | (27,515 | ) |  |  | 28,257 |  |  |  | 55,772 |  |  |  | (15,386 | ) |  |  | 40,386 |
Internal use software |  |  | 906 |  |  |  | (319 | ) |  |  | 587 |  |  |  | 482 |  |  |  | (214 | ) |  |  | 268 |
|  | $ | 84,678 |  |  | $ | (54,591 | ) |  | $ | 30,087 |  |  | $ | 84,254 |  |  | $ | (35,310 | ) |  | $ | 48,944 |
Remaining Amortization Expense Associated with Finite-Lived Intangible Assets | The remaining amortization expense associated with finite-lived intangible assets is expected to be as follows (in thousands):
Year ending December 31, |  |  |  |
2021 |  | $ | 12,568 |
2022 |  |  | 12,546 |
2023 |  |  | 1,119 |
2024 |  |  | 1,119 |
2025 |  |  | 1,068 |
Thereafter |  |  | 1,667 |
Total |  | $ | 30,087 |

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- Definition Tabular disclosure of the characteristics, including initial carrying value, residual amount, weighted average useful life, of finite-lived intangible assets acquired during the period by major class. A major class is composed of intangible assets that can be grouped together because they are similar, either by nature or by their use in the operations of the company. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 + Details
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