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Quarterly Financial Information (Unaudited) | 12 Months Ended
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Dec. 31, 2015
Quarterly Financial Information Disclosure [Abstract] |
Quarterly Financial Information (Unaudited) | Quarterly Financial Information (Unaudited) Offshore marine construction activities may fluctuate as a result of weather conditions as well as the timing of capital expenditures by oil and gas companies. Historically, a substantial portion of our services has been performed during the summer and fall months. As a result, historically a disproportionate portion of our revenues and net income is earned during such period. The following is a summary of consolidated quarterly financial information (in thousands, except per share amounts):
| Quarter Ended
| March 31, |  | June 30, |  | September 30, |  | December 31,
2015 |  |  |  |  |  |  |
Net revenues | $ | 189,641 |  |  | $ | 166,016 |  |  | $ | 182,462 |  |  | $ | 157,683 |
Gross profit (loss) (1) | $ | 34,947 |  |  | $ | 24,208 |  |  | $ | 31,969 |  |  | $ | (324,898 | )
Net income (loss) applicable to common shareholders (2) | $ | 19,642 |  |  | $ | (2,635 | ) |  | $ | 9,880 |  |  | $ | (403,867 | )
Basic earnings (loss) per common share | $ | 0.19 |  |  | $ | (0.03 | ) |  | $ | 0.09 |  |  | $ | (3.83 | )
Diluted earnings (loss) per common share | $ | 0.19 |  |  | $ | (0.03 | ) |  | $ | 0.09 |  |  | $ | (3.83 | )
| Quarter Ended
| March 31, |  | June 30, |  | September 30, |  | December 31,
2014 |  |  |  |  |  |  |
Net revenues | $ | 253,572 |  |  | $ | 305,587 |  |  | $ | 340,837 |  |  | $ | 207,160 |
Gross profit | 75,846 |  |  | 109,138 |  |  | 126,247 |  |  | 32,805 |
Net income applicable to common shareholders | $ | 53,719 |  |  | $ | 57,782 |  |  | $ | 75,586 |  |  | $ | 7,960 |
Basic earnings per common share | $ | 0.51 |  |  | $ | 0.55 |  |  | $ | 0.72 |  |  | $ | 0.08 |
Diluted earnings per common share | $ | 0.51 |  |  | $ | 0.55 |  |  | $ | 0.71 |  |  | $ | 0.08 |
(1) | Amount in the fourth quarter of 2015 includes impairment charges of $205.2 million for the Helix 534 and $133.4 million for the HP I and $6.3 million for certain capitalized vessel project costs (Note 4).
(2) | Amount in the fourth quarter of 2015 includes a $16.4 million impairment charge on goodwill related to our U.K. well intervention reporting unit (Notes 2 and 6), losses totaling $123.8 million related to our equity investments in Deepwater Gateway and Independence Hub (Note 5), and unrealized losses totaling $19.0 million on our foreign currency exchange contracts associated with the Grand Canyon, Grand Canyon II and Grand Canyon III chartered vessels (Note 18).

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- Definition The entire disclosure for the quarterly financial data in the annual financial statements. The disclosure may include a tabular presentation of financial information for each fiscal quarter for the current and previous year, including revenues, gross profit, income or loss before extraordinary items and earnings per share data. It also includes an indication if the information in the note is unaudited, comments on the aggregate effect of year-end adjustments, and an explanation of matters or transactions that affect comparability or are pertinent to an understanding of the information furnished. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 45 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=51655806&loc=d3e765-108305 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a)-(j) -URI http://asc.fasb.org/extlink&oid=51825399&loc=d3e1280-108306 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=51655806&loc=d3e725-108305 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 6 -Section G -Subsection 1 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 302 -Paragraph a + Details
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