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Goodwill and Intangible Assets (Tables) | 12 Months Ended
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Dec. 31, 2019
Goodwill And Intangible Assets Disclosure [Abstract] |
Goodwill by Operating Segment | Goodwill — Goodwill by operating segment as of December 31, 2019 and 2018 and changes for the years then ended are as follows (in thousands):
|  | Contract |  |  | Pressure |  |  | Directional |  |  | Other |  |  |  |  |
|  | Drilling |  |  | Pumping |  |  | Drilling |  |  | Operations |  |  | Total |
Balance, December 31, 2017 |  | $ | 395,060 |  |  | $ | 121,444 |  |  | $ | 88,685 |  |  | $ | 6,284 |  |  | $ | 611,473 |
Goodwill acquired |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 9,412 |  |  |  | 9,412 |
Measurement period adjustment |  |  | — |  |  |  | — |  |  |  | 1,000 |  |  |  | — |  |  |  | 1,000 |
Impairment |  |  | — |  |  |  | (121,444 | ) |  |  | (89,685 | ) |  |  | — |  |  |  | (211,129 | )
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 |
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 the Company’s 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 |  | 5.22
Favorable drilling contracts |  | Contract drilling |  | 0.83
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, 2019 and 2018 are as follows (in thousands):
|  | 2019 |  |  | 2018 |
|  | Gross Carrying |  |  | Accumulated |  |  | Net Carrying |  |  | Gross Carrying |  |  | Accumulated |  |  | Net Carrying |
|  | Amount |  |  | Amortization |  |  | Amount |  |  | Amount |  |  | Amortization |  |  | Amount |
Customer relationships |  | $ | 28,000 |  |  | $ | (19,710 | ) |  | $ | 8,290 |  |  | $ | 28,000 |  |  | $ | (10,719 | ) |  | $ | 17,281 |
Developed technology |  |  | 55,772 |  |  |  | (15,386 | ) |  |  | 40,386 |  |  |  | 55,772 |  |  |  | (6,533 | ) |  |  | 49,239 |
Favorable drilling contracts |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 22,500 |  |  |  | (22,500 | ) |  |  | — |
Internal use software |  |  | 482 |  |  |  | (214 | ) |  |  | 268 |  |  |  | 482 |  |  |  | (118 | ) |  |  | 364 |
|  | $ | 84,254 |  |  | $ | (35,310 | ) |  | $ | 48,944 |  |  | $ | 106,754 |  |  | $ | (39,870 | ) |  | $ | 66,884 |
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, |  |  |  |
2020 |  | $ | 19,273 |
2021 |  |  | 12,483 |
2022 |  |  | 12,461 |
2023 |  |  | 1,034 |
2024 |  |  | 1,034 |
Thereafter |  |  | 2,659 |
Total |  | $ | 48,944 |

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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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