Stock-Based Compensation Stock Option Black Scholes Option Pricing Model Assumptions (Details) (Employee Stock Option [Member])	3 Months Ended				6 Months Ended
	Jun. 30, 2011		Jun. 30, 2010		Jun. 30, 2011	Jun. 30, 2010
Employee Stock Option [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis, Valuation Techniques [Line Items]
Dividend yield	0.00%	[1]	0.00%	[1]	0.00%	0.00%
Expected volatility	0.00%	[1]	0.00%	[1]	46.60%	48.70%
Risk free interest rate	0.00%	[1]	0.00%	[1]	2.00%	2.30%
Expected life (years)	0	[1]	0	[1]	4.85	4.61

[1] There were no employee stock options granted for the three months ended June 30, 2011 and 2010.