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Quarterly Financial Information (Unaudited) | 12 Months Ended
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Dec. 31, 2016
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,
2016 |  |  |  |  |  |  |
Net revenues | $ | 91,039 |  |  | $ | 107,267 |  |  | $ | 161,245 |  |  | $ | 128,031 |
Gross profit (loss) | (16,930 | ) |  | 5,658 |  |  | 40,184 |  |  | 17,604 |
Net income (loss) applicable to common shareholders (1) | (27,823 | ) |  | (10,671 | ) |  | 11,462 |  |  | (54,413 | )
Basic earnings (loss) per common share | $ | (0.26 | ) |  | $ | (0.10 | ) |  | $ | 0.10 |  |  | $ | (0.46 | )
Diluted earnings (loss) per common share | $ | (0.26 | ) |  | $ | (0.10 | ) |  | $ | 0.10 |  |  | $ | (0.46 | )
| Quarter Ended
| March 31, |  | June 30, |  | September 30, |  | December 31,
2015 |  |  |  |  |  |  |
Net revenues | $ | 189,641 |  |  | $ | 166,016 |  |  | $ | 182,462 |  |  | $ | 157,683 |
Gross profit (loss) (2) | 34,947 |  |  | 24,208 |  |  | 31,969 |  |  | (324,898 | )
Net income (loss) applicable to common shareholders (3) | 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 | )
(1) | Amount in the fourth quarter of 2016 included a $45.1 million goodwill impairment charge related to our robotics reporting unit (Notes 2 and 6).
(2) | Amount in the fourth quarter of 2015 included 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).
(3) | Amount in the fourth quarter of 2015 included a $16.4 million goodwill impairment charge 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 quarterly financial data. Includes, but is not limited to, tabular presentation of financial information for fiscal quarters, effect of year-end adjustments, and an explanation of matters or transactions that affect comparability of the information. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=68076893&loc=d3e1570-108306 Reference 2: 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=68064558&loc=d3e765-108305 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=68064558&loc=d3e725-108305 + Details
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