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Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2016
Summary of Significant Accounting Policies |
Inventory |
|  | December 31, |
|  | 2016 |  | 2015 |
|  | (In thousands) |
Raw materials |  | $ | 84,431 |  | $ | 105,217 |
Work-in-progress |  |  | 1,204 |  |  | 29,710 |
Finished goods |  |  | 17,960 |  |  | 18,897 |
|  | $ | 103,595 |  | $ | 153,824 |
Change in the carrying amount of goodwill for various contract drilling segments and other operating segments | The change in the carrying amount of goodwill for our business lines for the years ended December 31, 2016 and 2015 was as follows:
|  |  |  |  | Acquisitions |  |  |  |  |  |  |  |  |  |
|  |  |  |  | and |  |  |  |  |  |  |  |  |  |
|  | Balance at |  | Purchase |  | Disposals |  | Cumulative |  | Balance at |
|  | December 31, |  | Price |  | and |  | Translation |  | December 31, |
|  | 2014 |  | Adjustments |  | Impairments |  | Adjustment |  | 2015 |
|  | (In thousands) |
Drilling & Rig Services: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. |  | $ | 50,149 |  | $ | — |  | $ | — |  | $ | — |  | $ | 50,149 |
International |  |  | — |  |  | 75,634 | (1) |  | — |  |  | — |  |  | 75,634 |
Rig Services |  |  | 31,667 |  |  | 10,868 | (2) |  | — |  |  | (1,659) |  |  | 40,876 |
Subtotal Drilling & Rig Services |  |  | 81,816 |  |  | 86,502 |  |  | — |  |  | (1,659) |  |  | 166,659 |
Completion & Production Services |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Completion |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
Production |  |  | 92,112 |  |  | — |  |  | (92,112) | (3) |  | — |  |  | — |
Subtotal Completion & Production Services |  |  | 92,112 |  |  | — |  |  | (92,112) |  |  | — |  |  | — |
Total |  | $ | 173,928 |  | $ | 86,502 |  | $ | (92,112) |  | $ | (1,659) |  | $ | 166,659 |
|  |  |  |  | Acquisitions |  |  |  |  |  |  |  |  |  |
|  |  |  |  | and |  |  |  |  |  |  |  |  |  |
|  | Balance at |  | Purchase |  | Disposals |  | Cumulative |  | Balance at |
|  | December 31, |  | Price |  | and |  | Translation |  | December 31, |
|  | 2015 |  | Adjustments |  | Impairments |  | Adjustment |  | 2016 |
|  | (In thousands) |
Drilling & Rig Services: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. |  | $ | 50,149 |  | $ | — |  | $ | — |  | $ | — |  | $ | 50,149 |
International |  |  | 75,634 |  |  | — |  |  | — |  |  | — |  |  | 75,634 |
Rig Services |  |  | 40,876 |  |  | — |  |  | — |  |  | 258 |  |  | 41,134 |
Total |  | $ | 166,659 |  | $ | — |  | $ | — |  | $ | 258 |  | $ | 166,917 |
| (1) |  | Represents the goodwill recorded in connection with our acquisition of Nabors Arabia. See Note 5—Acquisitions for additional discussion.
| (2) |  | Represents the goodwill recorded in connection with our acquisition of 2TD. See Note 5—Acquisitions for additional discussion.
| (3) |  | Represents the goodwill associated with the Completion & Production Services business that was merged with CJES. See Note 9—Investments in unconsolidated affiliates for additional discussion.

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