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Income Taxes (Reconciliation of Effective Income Tax Rate) (Details)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Tax Disclosure [Abstract]
Tax at federal statutory rate	35.00%	35.00%	35.00%
Effective Income Tax Rate Reconciliation, Uncertain Tax Benefits	(421.60%)	0.00%	0.20%
Company provided benefits	69.20%	(0.90%)	(3.80%)
Valuation allowance for deferred tax assets	(200.90%)	(20.90%)	(55.60%)
Effective Income Tax Rate Reconciliation, Company Provided Benefits	152.90%	(3.00%)	0.20%
Compensation-based credits	(139.70%)	(2.00%)	7.70%
Effective Income Tax Rate Reconciliation, Compensation-based credits	(60.80%)	2.30%	2.40%
Other, net	0.70%	(0.80%)	0.10%
Effective tax rate	(163.40%)	9.70%	(13.80%)

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Effective Income Tax Rate Reconciliation, Accrued Interest on Uncertain Tax Benefits

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

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 13
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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Percentage 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 equity-based compensation costs.

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