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Consolidated Statements of Comprehensive Income (Loss) Statement (USD $)
In Thousands, unless otherwise specified |
3 Months Ended | 12 Months Ended | |||
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Mar. 31, 2013
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Mar. 31, 2012
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Dec. 31, 2012
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Dec. 31, 2011
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Dec. 31, 2010
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| Statement of Other Comprehensive Income [Abstract] | |||||
| Net income | $ 44,559 | $ 26,869 | $ 68,371 | $ 108,422 | $ 47,363 |
| Foreign currency translation adjustment | (3,567) | 939 | 1,355 | (1,865) | 2,255 |
| Change in fair value of derivative instruments, net of taxes | (1,430) | (10,621) | (8,452) | 1,576 | (4,720) |
| Reclassification of settled contracts, net of taxes | 1,797 | (100) | 1,005 | 4,720 | 18,736 |
| Other comprehensive income (loss) | (3,200) | (9,782) | (6,092) | 4,431 | 16,271 |
| Comprehensive income | 41,359 | 17,087 | 62,279 | 112,853 | 63,634 |
| Change in fair value of derivative instruments, tax | (900) | 0 | (4,301) | 0 | 0 |
| Reclassification of settled contracts, tax | $ 1,200 | $ 0 | $ 512 | $ 0 | $ 0 |
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- Definition
The change in equity [net assets] of a business enterprise during a period from transactions and other events and circumstances from non-owner sources which are attributable to the reporting entity. It includes all changes in equity during a period except those resulting from investments by owners and distributions to owners, but excludes any and all transactions which are directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount after tax and reclassification adjustments, resulting from the process of expressing in the reporting currency of the reporting entity those amounts that are denominated or measured in a different currency, and from transactions whose terms are denominated in a currency other than the entity's functional currency, which is attributable to the parent entity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Net of tax amount of other comprehensive income (loss) attributable to the parent entity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Net of tax amount of the income statement impact of the reclassification adjustment of accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges realized in net income. Also includes reclassification adjustments of an entity's share of an equity investee's deferred hedging gain (loss) realized in net income. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Tax effect of the income statement impact of the reclassification adjustment of accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges realized in net income. Also includes reclassification adjustments of an entity's share of an equity investee's deferred hedging gain (loss) realized in net income. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Net of tax amount, before reclassification adjustments, of the change in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges. Also includes an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Tax effect of the change in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges. Also includes an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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