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Impairments and Other Charges (Details) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2019 USD ($) | Jun. 30, 2018 USD ($) | Jun. 30, 2019 USD ($) item | Jun. 30, 2018 USD ($)
Goodwill And Intangible Assets: |  |  |  |
Goodwill impairments | $ 93,634 |  | $ 93,634 |
Intangible asset impairment | 5,235 |  | 5,235 |
Subtotal | 98,869 |  | 98,869 | $ 63,726
Other Charges: |  |  |  |
Divestiture of International assets |  | $ 63,726 |  | 63,726
Transaction related costs |  | 5,894 |  | 12,938
Loss (gain) on early extinguishment of debt | 3,701 |  | 1,034 |
Total impairments and other charges | 102,570 | $ 69,620 | 99,903 | 76,664
Principal amount redeemed | 361,500 |  | 361,500 |
Payment of long-term debt |  |  | 361,966 | 460,837
Gain on debt repurchase | (3,701) |  | (1,034) |
Write-off of receivable |  |  | 256 | $ (2,663)
International Drilling |  |  |  |
Goodwill And Intangible Assets: |  |  |  |
Goodwill impairments | 75,600 |  | 75,600 |
Other Charges: |  |  |  |
Divestiture of International assets |  |  | $ 63,700 |
Number of offshore drilling rigs sold | item |  |  | 3 |
Rig Technologies |  |  |  |
Goodwill And Intangible Assets: |  |  |  |
Goodwill impairments | 18,000 |  | $ 18,000 |
Senior Notes. |  |  |  |
Other Charges: |  |  |  |
Principal amount redeemed | $ 315,300 |  | $ 361,500 |

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