Stock-Based Compensation (Schedule of Stock Options Granted Black Scholes) (Details) (Stock Based Options [Member])	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Stock Based Options [Member]
Expected life (years)	4 years 2 months 12 days	4 years 2 months 12 days	4 years 2 months 12 days
Risk free interest rate (%)	0.60%	1.30%	1.40%
Expected volatility (%)	50.80%	48.90%	50.90%
Dividend yield (%)	0.00%	0.00%	0.00%