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Quarterly Financial Information (Summary Of Consolidated Quarterly Financial Information) (Details) (USD $) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2013 | Sep. 30, 2013 | Jun. 30, 2013 | Mar. 31, 2013 | Dec. 31, 2012 | Sep. 30, 2012 | Jun. 30, 2012 | Mar. 31, 2012 | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Quarterly Financial Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net revenues | $ 226,837,000 | [1] | $ 220,117,000 | [1] | $ 232,178,000 | [1] | $ 197,429,000 | [1] | $ 201,696,000 | [2] | $ 217,110,000 | [2] | $ 197,461,000 | [2] | $ 229,842,000 | [2] | $ 876,561,000 | $ 846,109,000 | $ 702,000,000
Gross profit (loss) | 71,164,000 | [3] | 69,457,000 | [3] | 67,497,000 | [3] | 52,567,000 | [3] | (108,925,000) | [4] | 57,919,000 | [4] | 28,438,000 | [4] | 72,483,000 | [4] | 260,685,000 | 49,915,000 | 149,683,000
Net income (loss) applicable to Helix: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income (loss) from continuing operations | 36,503,000 |  | 44,549,000 |  | 27,240,000 |  | 557,000 |  | (99,679,000) |  | 10,362,000 |  | 2,425,000 |  | 16,874,000 |  | 108,849,000 | (70,018,000) | 34,718,000
Income (loss) from discontinued operations |  |  | 44,000 |  | (29,000) |  | 1,058,000 |  | (71,888,000) |  | 4,503,000 |  | 42,216,000 |  | 48,853,000 |  | 1,073,000 | 23,684,000 | 95,221,000
Net income (loss) applicable to Helix | 36,503,000 |  | 44,593,000 |  | 27,211,000 |  | 1,615,000 |  | (171,567,000) | [5] | 14,865,000 | [5] | 44,641,000 | [5] | 65,727,000 | [5] | 109,922,000 | (46,334,000) | 129,939,000
Basic earnings (loss) per common share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Continuing operations | $ 0.35 |  | $ 0.42 |  | $ 0.26 |  | $ 0.01 |  | $ (0.95) |  | $ 0.10 |  | $ 0.02 |  | $ 0.16 |  | $ 1.03 | $ (0.67) | $ 0.33
Discontinued operations |  |  |  |  |  |  | $ 0.01 |  | $ (0.69) |  | $ 0.04 |  | $ 0.40 |  | $ 0.46 |  | $ 0.01 | $ 0.23 | $ 0.90
Net income (loss) per common share | $ 0.35 |  | $ 0.42 |  | $ 0.26 |  | $ 0.02 |  | $ (1.64) |  | $ 0.14 |  | $ 0.42 |  | $ 0.62 |  | $ 1.04 | $ (0.44) | $ 1.23
Diluted earnings (loss) per common share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Continuing operations | $ 0.35 |  | $ 0.42 |  | $ 0.26 |  | $ 0.01 |  | $ (0.95) |  | $ 0.10 |  | $ 0.02 |  | $ 0.16 |  | $ 1.03 | $ (0.67) | $ 0.33
Discontinued operations |  |  |  |  |  |  | $ 0.01 |  | $ (0.69) |  | $ 0.04 |  | $ 0.40 |  | $ 0.46 |  | $ 0.01 | $ 0.23 | $ 0.90
Net income (loss) per common share | $ 0.35 |  | $ 0.42 |  | $ 0.26 |  | $ 0.02 |  | $ (1.64) |  | $ 0.14 |  | $ 0.42 |  | $ 0.62 |  | $ 1.04 | $ (0.44) | $ 1.23
Impairment of Long-Lived Assets Held-for-use |  |  |  |  |  |  |  |  | 158,000,000 |  | 4,600,000 |  | 14,600,000 |  |  |  |  | 177,135,000 | 6,564,000
Impairment of Oil and Gas Properties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 138,600,000 |
Discontinued Operations [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Quarterly Financial Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net revenues |  |  |  |  |  |  | 48,800,000 |  | 110,100,000 |  | 119,100,000 |  | 149,900,000 |  | 178,100,000 |  |  |  |
Gross profit (loss) |  |  |  |  |  |  | 28,200,000 |  | (102,600,000) |  | 27,800,000 |  | 64,800,000 |  | 89,200,000 |  |  |  |
Diluted earnings (loss) per common share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment of Oil and Gas Properties |  |  |  |  |  |  |  |  | $ 138,600,000 |  |  |  |  |  |  |  |  |  |
[1] | Excludes revenues from discontinued operations of $48.8 million for the quarter ended March 31, 2013.
[2] | Excludes revenues from discontinued operations of $178.1 million, $149.9 million, $119.1 million and $110.1 million for the quarters ended March 31, June 30, September 30 and December 31, 2012.
[3] | Excludes gross profit from discontinued operations of $28.2 million for the quarter ended March 31, 2013.
[4] | Excludes gross profit from discontinued operations of $89.2 million, $64.8 million, $27.8 million and $(102.6) million for the quarters ended March 31, June 30, September 30 and December 31, 2012. Includes impairment charges totaling $14.6 million in the second quarter of 2012, $4.6 million in the third quarter of 2012 and $158.0 million in the fourth quarter of 2012 (Note 2).
[5] | Our net loss in the fourth quarter of 2012 includes a $138.6 million impairment charge associated with the sale of ERT (Note 3).

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