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- Definition

Foreign tax credit and offset to branch deferreds

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- Definition

Foreign withholding taxes

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No definition available.

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- Definition

Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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- Definition

This element represents the income or loss from continuing operations attributable to the economic entity which may also be defined as revenue less expenses from ongoing operations, after income or loss from equity method investments, but before income taxes, extraordinary items, and noncontrolling interest.

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- Definition

Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to increase (decrease) in the valuation allowance for deferred tax assets.

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The amount of income tax expense or benefit for the period computed by applying the domestic federal statutory tax rates to pretax income from continuing operations.

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to noncontrolling interest income (loss) exempt from income taxes.

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to revisions of previously reported income tax expense (benefit).

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Income Taxes (Details 3) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Tax Disclosure [Abstract]
Income (loss) from continuing operations before income taxes	$ 25,272	$ 56,286	$ (19,256)	$ 36,269	$ 30,656	$ 6,550	$ 16,765	$ (5,472)	$ 98,571	$ 48,499	$ 26,880
U.S. federal statutory rate									35.00%	35.00%	35.00%
Provision at statutory rate									34,500	16,975	9,408
State income taxes—net of federal benefit									3,197	(577)	71
Effect of rates other than statutory									(1,925)	(1,041)	(829)
Effect of U.S. taxation on foreign branches									20,769	2,974	1,883
Foreign tax adjustment, prior years									(3,669)	4,533	0
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Other, Amount									4,698	24,625	0
Noncontrolling interest									7,986	6,096	3,429
Foreign tax credit and offset to branch deferreds									6,851	(2,876)	(12,360)
Impact of valuation allowance on deferred tax assets									(7,331)	(53,218)	6,233
Foreign net gain on subsidiary dissolution and intercompany debt waivers									(13,620)	0	0
Foreign withholding taxes									5,054semg_Foreignwithholdingtaxes	0semg_Foreignwithholdingtaxes	0semg_Foreignwithholdingtaxes
Other, net									5,975	(2,553)	(3,055)
Provision (benefit) for income taxes	$ 12,569us-gaap_IncomeTaxExpenseBenefit	$ 24,090us-gaap_IncomeTaxExpenseBenefit	$ (6,672)us-gaap_IncomeTaxExpenseBenefit	$ 16,526us-gaap_IncomeTaxExpenseBenefit	$ 24,051us-gaap_IncomeTaxExpenseBenefit	$ 3,413us-gaap_IncomeTaxExpenseBenefit	$ 9,288us-gaap_IncomeTaxExpenseBenefit	$ (54,006)us-gaap_IncomeTaxExpenseBenefit	$ 46,513us-gaap_IncomeTaxExpenseBenefit	$ (17,254)us-gaap_IncomeTaxExpenseBenefit	$ (2,078)us-gaap_IncomeTaxExpenseBenefit