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Summary of Significant Accounting Policies | 6 Months Ended
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Jun. 30, 2019
Summary of Significant Accounting Policies |
Summary of Significant Accounting Policies | Note 2 Summary of Significant Accounting Policies ​ Interim Financial Information ​ The accompanying unaudited condensed consolidated financial statements of Nabors have been prepared in conformity with generally accepted accounting principles in the United States (“U.S. GAAP”). Pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”), certain information and footnote disclosures normally included in annual financial statements prepared in accordance with U.S. GAAP have been omitted. Therefore, these financial statements should be read together with our annual report on Form 10-K for the year ended December 31, 2018 (“2018 Annual Report”). In management’s opinion, the unaudited condensed consolidated financial statements contain all adjustments necessary to state fairly our financial position as of June 30, 2019 and the results of operations, comprehensive income (loss), cash flows and changes in equity for the periods presented herein. Interim results for the six months ended June 30, 2019 may not be indicative of results that will be realized for the full year ending December 31, 2019. ​ Principles of Consolidation ​ Our condensed consolidated financial statements include the accounts of Nabors, as well as all majority owned and non-majority owned subsidiaries consolidated in accordance with U.S. GAAP. All significant intercompany accounts and transactions are eliminated in consolidation. ​ In addition to the consolidation of our majority owned subsidiaries, we also consolidate variable interest entities (“VIE”) when we are determined to be the primary beneficiary of a VIE. Determination of the primary beneficiary of a VIE is based on whether an entity has (1) the power to direct activities that most significantly impact the economic performance of the VIE and (2) the obligation to absorb losses or the right to receive benefits of the VIE that could potentially be significant to the VIE. Our joint venture, SANAD, which is equally owned by Saudi Aramco and Nabors, has been consolidated. As we have the power to direct activities that most significantly impact SANAD’s economic performance, including operations, maintenance and certain sourcing and procurement, we have determined Nabors to be the primary beneficiary. See Note 3—Joint Ventures. ​ ​ Inventory ​ Inventory is stated at the lower of cost or net realizable value. Cost is determined using the first-in, first-out or weighted-average cost methods and includes the cost of materials, labor and manufacturing overhead. Inventory included the following: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | June 30, | ​ | December 31, | ​
​ |  | 2019 |  | 2018 |
​ | ​ | (In thousands) |
Raw materials | ​ | $ | 130,904 | ​ | $ | 116,840 | ​
Work-in-progress | ​ |  | 14,452 | ​ |  | 20,329 | ​
Finished goods | ​ |  | 33,011 | ​ |  | 28,418 | ​
​ | ​ | $ | 178,367 | ​ | $ | 165,587 | ​
​ Goodwill ​ We review goodwill for impairment annually during the second quarter of each fiscal year or more frequently if events or changes in circumstances indicate that the carrying amount of such goodwill and intangible assets may exceed their fair value. We initially assess goodwill for impairment based on qualitative factors to determine whether the existence of events or circumstances leads to a determination that it is more likely than not that the fair value of one of our reporting units is greater than its carrying amount. If the carrying amount exceeds the fair value, an impairment charge will be recognized in an amount equal to the excess; however, the loss recognized should not exceed the total amount of goodwill allocated to that reporting unit. ​ Our estimated fair values of our reporting units incorporate judgment and the use of estimates by management. The fair values calculated in these impairment tests were determined using discounted cash flow models which require the use of significant unobservable inputs, representative of a Level 3 fair value measurement. Our cash flow models involve assumptions based on our utilization of rigs or other oil and gas service equipment, revenues and earnings from affiliates, as well as direct costs, general and administrative costs, depreciation, applicable income taxes, capital expenditures and working capital requirements. Our fair value estimates of these reporting units are sensitive to varying dayrates, utilization and costs. Therefore, a significantly prolonged period of lower oil and natural gas prices or changes in laws and regulations could adversely affect the demand for and prices of our services, which could in turn result in future goodwill impairment charges for these reporting units due to the potential impact on our estimate of our future operating results. Our discounted cash flow projections for each reporting unit were based on financial forecasts. The future cash flows were discounted to present value using discount rates determined to be appropriate for each reporting unit. Terminal values for each reporting unit were calculated using a Gordon Growth methodology with a long term growth rate of approximately 2%. ​ Another factor in determining whether impairment has occurred is the relationship between our market capitalization and our book value. As part of our annual review, we compared the sum of our reporting units’ estimated fair value, which included the estimated fair value of non-operating assets and liabilities, less debt, to our market capitalization and assessed the reasonableness of our estimated fair value. Any of the above mentioned factors may cause us to re-evaluate goodwill during any quarter throughout the year. ​ The change in the carrying amount of goodwill for our segments for the six months ended June 30, 2019 was as follows: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | ​ | ​ |  | ​ | ​ |  | ​ | ​ |  | ​ | ​ |  | ​ | ​ |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ |
​ | ​ | Balance at | ​ | Disposals | ​ | Cumulative | ​ | ​ | ​ | Balance at |
​ | ​ | December 31, | ​ | and | ​ | Translation | ​ | Other | ​ | June 30, |
​ | ​ | 2018 | ​ | Impairments | ​ | Adjustment | ​ | Adjustment | ​ | 2019 |
​ | ​ | (In thousands) |
U.S. Drilling | ​ | $ | 50,149 | ​ | $ | — | ​ | $ | — | ​ | $ | 2,054 | ​ | $ | 52,203 | ​
International Drilling | ​ | ​ | 75,634 | ​ | ​ | (75,634) | (1) | ​ | — | ​ | ​ | — | ​ | ​ | — | ​
Drilling Solutions | ​ |  | 11,436 | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | 11,436 | ​
Rig Technologies | ​ |  | 46,695 | ​ |  | (18,000) | (1) |  | 365 | ​ |  | (2,054) | ​ |  | 27,006 | ​
Total | ​ | $ | 183,914 | ​ | $ | (93,634) | ​ | $ | 365 | ​ | $ | — | ​ | $ | 90,645 | ​
(1) | As part of our annual review during the second quarter of 2019, we determined the carrying value of some of our reporting units exceeded their fair value. As such, we recognized a goodwill impairment of $93.6 million. See Note 9—Impairments and Other Charges.
​ Recently Adopted Accounting Pronouncements ​ In February 2016, the FASB issued ASU No. 2016-02, Leases, relating to leases to increase transparency and comparability among companies. This standard requires that all leases with an initial term greater than one year be recorded on the balance sheet as an asset and a lease liability. Additionally, this standard requires disclosures designed to give financial statement users information on the amount, timing, and uncertainty of cash flows arising from leases. We adopted this guidance under the modified retrospective approach as of January 1, 2019. We preliminarily determined that our drilling contracts contained a lease component, and the adoption would require us to separately recognize revenue associated with the lease and services components. In July 2018, the FASB issued ASU No. 2018-11, which provides a practical expedient that allows entities to combine lease and non-lease components where the revenue recognition pattern is the same and where the lease component, when accounted for separately, would be considered an operating lease. Our drilling contracts contain a lease component related to the underlying drilling equipment, in addition to the service component provided by our crews and our expertise to operate such drilling equipment. We have determined that the non-lease service component of our drilling contracts is the predominant element of the combined component and will account for the combined components as a single performance obligation under Topic 606, Revenue from Contracts with Customers. We have elected the package of practical expedients permitted under the transition guidance within the new standard, which among other things, allows us to carry forward the historical accounting relating to lease identification and classification for existing leases upon adoption. With respect to leases whereby we are the lessee, we recognized upon adoption on January 1, 2019 lease liabilities and offsetting "right of use" assets of approximately $42.8 million based on the present value of the remaining minimum rental payments. See Note 13 — Leases. ​ Recent Accounting Pronouncements Not Yet Adopted ​ In February 2018, the FASB issued ASU No. 2018-02, Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income, which allows a reclassification from accumulated other comprehensive income to retained earnings for stranded tax effects resulting from the Tax Cuts and Jobs Act of 2017. In addition, the standard requires certain disclosures regarding stranded tax effects. This guidance is effective for public companies for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. We are currently evaluating the impact this will have on our financial statements.

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