Income Taxes (Federal Tax Rate Reconciliation) (Details)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Tax Disclosure [Abstract]
Federal statutory rate	35.00%	35.00%	35.00%
State income taxes, net	(2.40%)	(1.80%)	(1.10%)
Foreign tax rate differential	(0.10%)	2.60%	0.00%
Permanent differences	2.00%	8.60%	(6.30%)
Valuation allowance	(31.90%)	(39.80%)	(35.40%)
Net (increase) decrease in unrecognized tax benefits	0.60%	(1.70%)	3.70%
Benefit from settlement of Tax Court litigation	0.00%	6.40%	0.00%
Other, net	0.00%	0.60%	6.20%
Effective tax rate	35.40%	9.90%	2.10%