Income Taxes - Schedule of U.S. Statutory Income Tax Rates From Continuing Operations (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Tax Disclosure [Abstract]
Federal income taxes at the statutory rate	$ 98,576	$ 81,448	$ 89,128
Noncontrolling interests	(1,667)	(1,247)	(806)
State and local income taxes, net of federal tax benefits	9,944	9,446	8,512
State tax reserves	(38)	(6,529)	3,927
Permanent differences	2,961	3,226	2,605
Domestic manufacturing deduction	(5,008)	(4,778)	(5,559)
Foreign income taxes (including UK statutory rate changes)	(1,237)	1,183	(438)
Federal tax reserves	62	263	(258)
Other	(65)	(726)	783
Income tax provision	$ 103,528us-gaap_IncomeTaxExpenseBenefit	$ 82,286us-gaap_IncomeTaxExpenseBenefit	$ 97,894us-gaap_IncomeTaxExpenseBenefit

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-08.(h))

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-Number 210

-Section 08

-Paragraph h

-Article 4

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-Name Accounting Standards Codification

-Glossary Income Tax Expense (or Benefit)

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 9

-Subparagraph (a),(b)

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

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

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-Topic 740

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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 foreign income tax expense (benefit).

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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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