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Quarterly Financial Information (Summary Of Consolidated Quarterly Financial Information) (Details) (USD $) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2012 | Sep. 30, 2012 | Jun. 30, 2012 | Mar. 31, 2012 | Dec. 31, 2011 | Sep. 30, 2011 | Jun. 30, 2011 | Mar. 31, 2011 | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Quarterly Financial Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net revenues | $ 201,696,000 | [1] | $ 217,110,000 | [1] | $ 197,461,000 | [1] | $ 229,842,000 | [1] | $ 200,113,000 | [2] | $ 213,278,000 | [2] | $ 165,861,000 | [2] | $ 122,748,000 | [2] | $ 846,109,000 | $ 702,000,000 | $ 774,469,000
Gross profit (loss) | (108,925,000) | [3] | 57,919,000 | [3] | 28,438,000 | [3] | 72,483,000 | [3] | 26,273,000 | [4] | 64,972,000 | [4] | 44,043,000 | [4] | 14,395,000 | [4] | 49,915,000 | 149,683,000 | 164,817,000
Net income | (171,560,000) |  | 14,875,000 |  | 44,651,000 |  | 65,737,000 |  | 16,763,000 | [5] | 46,026,000 | [5] | 41,323,000 | [5] | 25,867,000 | [5] | (46,297,000) | 129,979,000 | (126,988,000)
Impairment of Long-Lived Assets Held-for-use | 158,000,000 |  | 4,600,000 |  | 14,600,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other than temporary loss on equity investments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 10,563,000 | 2,240,000
Net income (loss) applicable to common shareholders: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income (loss) from continuing operations | (99,679,000) |  | 10,362,000 |  | 2,425,000 |  | 16,874,000 |  | 17,487,000 |  | 15,999,000 |  | 10,547,000 |  | (9,315,000) |  | (70,018,000) | 34,291,000 | (20,445,000)
Income (loss) from discontinued operations | (71,888,000) | [6] | 4,503,000 | [6] | 42,216,000 | [6] | 48,853,000 | [6] | (734,000) |  | 30,017,000 |  | 30,766,000 |  | 35,172,000 |  | 23,684,000 | 95,221,000 | (106,657,000)
Net income applicable to common shareholders | (171,567,000) |  | 14,865,000 |  | 44,641,000 |  | 65,727,000 |  | 16,753,000 |  | 46,016,000 |  | 41,313,000 |  | 25,857,000 |  | (46,334,000) | 129,939,000 | (127,102,000)
Basic earnings (loss) per common share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Continuing operations | $ (0.95) |  | $ 0.10 |  | $ 0.02 |  | $ 0.16 |  | $ 0.17 |  | $ 0.15 |  | $ 0.10 |  | $ (0.09) |  | $ (0.67) | $ 0.33 | $ (0.19)
Discontinued operations | $ (0.69) |  | $ 0.04 |  | $ 0.40 |  | $ 0.46 |  | $ (0.01) |  | $ 0.28 |  | $ 0.29 |  | $ 0.33 |  | $ 0.23 | $ 0.90 | $ (1.03)
Basic earnings per common share | $ (1.64) |  | $ 0.14 |  | $ 0.42 |  | $ 0.62 |  | $ 0.16 |  | $ 0.43 |  | $ 0.39 |  | $ 0.24 |  | $ (0.44) | $ 1.23 | $ (1.22)
Diluted earnings (loss) per common share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Continuing operations | $ (0.95) |  | $ 0.10 |  | $ 0.02 |  | $ 0.16 |  | $ 0.17 |  | $ 0.15 |  | $ 0.10 |  | $ (0.09) |  | $ (0.67) | $ 0.33 | $ (0.19)
Discontinued operations | $ (0.69) |  | $ 0.04 |  | $ 0.40 |  | $ 0.46 |  | $ (0.01) |  | $ 0.29 |  | $ 0.29 |  | $ 0.33 |  | $ 0.23 | $ 0.90 | $ (1.03)
Diluted earnings per common share | $ (1.64) |  | $ 0.14 |  | $ 0.42 |  | $ 0.62 |  | $ 0.16 |  | $ 0.44 |  | $ 0.39 |  | $ 0.24 |  | $ (0.44) | $ 1.23 | $ (1.22)
Segment, Discontinued Operations [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Quarterly Financial Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net revenues | 110,100,000 |  | 119,100,000 |  | 149,900,000 |  | 178,100,000 |  | 196,100,000 |  | 159,200,000 |  | 172,500,000 |  | 168,900,000 |  |  |  |
Gross profit (loss) | (102,600,000) |  | 27,800,000 |  | 64,800,000 |  | 89,200,000 |  | 4,800,000 |  | 57,300,000 |  | 56,200,000 |  | 62,700,000 |  |  |  |
Australian Well Invention Equipment [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Quarterly Financial Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment of Long-Lived Assets Held-for-use |  |  |  |  |  |  |  |  | 6,600,000 |  |  |  |  |  |  |  |  |  |
Tax benefit related to reorganization |  |  |  |  |  |  |  |  | 31,300,000 |  |  |  |  |  |  |  |  |  |
United Kingdom [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Quarterly Financial Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net revenues |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 345,074,000 | 275,499,000 | 198,011,000
Sapura [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Quarterly Financial Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other than temporary loss on equity investments |  |  |  |  |  |  |  |  | $ 10,600,000 |  |  |  |  |  |  |  |  |  |
[1] | 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.
[2] | Excludes revenues from discontinued operations of $168.9 million, $172.5 million, $159.2 million and $196.1 million for the quarters ended March 31, June 30, September 30 and December 31, 2011.
[3] | Excludes gross profit (loss) 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).
[4] | Excludes gross profit from discontinued operations of $62.7 million, $56.2 million, $57.3 million and $4.8 million for the quarters ended March 31, June 30, September 30 and December 31, 2011. The fourth quarter includes a $6.6 million impairment charge to reduce our Australian well intervention equipment to its estimated fair value at December 31, 2011.
[5] | Our net income in the fourth quarter of 2011 includes a $10.6 million other than temporary impairment loss on our equity investment in our Australian joint venture (Note 5). The fourth quarter also includes a $31.3 million tax benefit related to reorganization of our Australian well intervention operations.
[6] | 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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