Stock-Based Compensation (Weighted-Average Assumptions Used In Black-Scholes Option Valuation Model) (Details) (USD $)	12 Months Ended
	Dec. 31, 2011 years		Dec. 31, 2010 years		Dec. 31, 2009 years
Stock-Based Compensation [Abstract]
Expected volatility	45.00%	[1]	41.00%	[1]	41.00%	[1]
Expected term in years	5.1	[2]	5.1	[2]	6.1	[2]
Risk-free interest rate	1.18%	[3]	1.65%	[3]	2.52%	[3]
Expected annual dividend yield	0.58%	[4]	0.71%	[4]	0.81%	[4]
Expected annual dividend rate per share	$ 0.12
Expected quarterly dividend rate per share	$ 0.03

[1] The expected volatility for each grant is determined based on the average of historical weekly price changes of the Company's common stock over a period of time which approximates the expected option term.

[2] The expected option term for each grant is determined based on the historical exercise behavior of employees and post-vesting employment termination behavior.

[3] The risk-free interest rate is based on the yield of zero-coupon U.S. Treasury securities for a period that is commensurate with the expected option term at the time of grant.

[4] The expected annual dividend yield is based on the weighted-average of the dividend yield assumptions used for options granted during the applicable period. The expected annual dividend is based on the expected dividend of $0.12 per share, per year ($0.03 per share, per quarter times 4 quarters) divided by the average stock price.