Shareholders' Equity (Fair Value Assumptions Used For Stock Options Grants) (Details) (Stock Options [Member])	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Expected life in years	5 years 8 months 16 days	5 years 1 month 21 days	5 years 0 months 29 days
Expected volatility	51.00%	43.65%	42.72%
Expected dividend yield	0.00%	0.00%	0.00%
Risk-free interest rate	0.89%	1.45%	2.06%
Director [Member]
Expected life in years		4 years 11 months 27 days	6 years 6 months 4 days
Expected volatility		43.34%	44.29%
Expected dividend yield		0.00%	0.00%
Risk-free interest rate		0.19%	2.08%