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Impairments and Other Charges (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2021 | Jun. 30, 2020 | Mar. 31, 2020 | Jun. 30, 2021 | Jun. 30, 2020
Impairments and Other Charges |  |  |  |  |
Goodwill impairments |  |  |  |  | $ 27,798
Impairment of Intangible Assets (Excluding Goodwill) |  | $ 1 |  |  | 83,625
Oil and gas related assets |  |  | $ 12,300 |  | 12,286
Severance and transaction related costs | $ 1,513 | 11,176 |  | $ 2,592 | 11,835
Other assets | 355 | 381 |  | 1,126 | 16,984
Total | 59,868 | 57,852 |  | 62,351 | 334,286
Other Machinery and Equipment |  |  |  |  |
Impairments and Other Charges |  |  |  |  |
Intangible asset impairment |  |  |  | 28,600 |
U.S. Drilling |  |  |  |  |
Impairments and Other Charges |  |  |  |  |
Impairment of Long-Lived Assets Held-for-use |  |  | 33,300 |  |
U.S. Drilling | Drilling, workover rigs and related equipment |  |  |  |  |
Impairments and Other Charges |  |  |  |  |
Intangible asset impairment |  |  | 54,000 |  |
Impairment of Long-Lived Assets Held-for-use |  | 4,961 |  | 87,300 | 87,333
Canada Drilling | Other Machinery and Equipment |  |  |  |  |
Impairments and Other Charges |  |  |  |  |
Intangible asset impairment | 58,000 |  |  | 58,000 |
International Drilling | Drilling, workover rigs and related equipment |  |  |  |  |
Impairments and Other Charges |  |  |  |  |
Recorded impairment |  |  | 30,500 |  |
Impairment of Long-Lived Assets Held-for-use |  | 32,591 |  | 215 | 63,076
Drilling Solutions |  |  |  |  |
Impairments and Other Charges |  |  |  |  |
Goodwill impairments |  |  | 11,400 |  |
Rig Technologies |  |  |  |  |
Impairments and Other Charges |  |  |  |  |
Goodwill impairments |  |  | $ 16,400 |  |
Intangible asset impairment |  | (90) |  | 418 | 2,708
Provision for obsolescence | $ 400 | 2,700 |  | 400 | 2,700
Rig Technologies | Other Machinery and Equipment |  |  |  |  |
Impairments and Other Charges |  |  |  |  |
Impairment of Long-Lived Assets Held-for-use |  | $ 8,832 |  |  | $ 28,641
Drilling and Rig Services |  |  |  |  |
Impairments and Other Charges |  |  |  |  |
Impairment of Intangible Assets (Excluding Goodwill) |  |  |  | $ 83,600 |

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