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Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2018
Significant Accounting Policies |
Schedule of carrying amount of goodwill by reportable segment |
Years Ended December 31, |  | 2018 |  |  | 2017 |
(in thousands) |  |  |  |  |  |
Technical Services |  | $ | 30,992 |  |  | $ | 30,992 |
Support Services |  |  | 1,158 |  |  |  | 1,158 |
Goodwill |  | $ | 32,150 |  |  | $ | 32,150 |
Schedule of reconciliation of weighted average shares outstanding |
(In thousands except per share data ) |  | 2018 |  |  | 2017 |  |  | 2016 |
Net income (loss) available for stockholders |  | $ | 175,402 |  |  | $ | 162,511 |  |  | $ | (141,246 | )
Less: Adjustments for losses attributable to participating securities |  |  | (1,839 | ) |  |  | (2,102 | ) |  |  | (147 | )
Net income (loss) used in calculating per share amounts |  | $ | 173,563 |  |  | $ | 160,409 |  |  | $ | (141,393 | )
Weighted average shares outstanding (including participating securities) |  |  | 215,198 |  |  |  | 217,194 |  |  |  | 217,509 |
Adjustment for participating securities |  |  | (2,453 | ) |  |  | (2,891 | ) |  |  | (3,282 | )
Shares used in calculating basic and diluted earnings (loss) per share |  |  | 212,745 |  |  |  | 214,303 |  |  |  | 214,227 |

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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