Stock-Based Compensation Plans (Weighted-Average Assumptions for the ESOP) (Details) (USD $)	3 Months Ended				6 Months Ended
	Jun. 30, 2013		Jun. 30, 2012		Jun. 30, 2013		Jun. 30, 2012
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Dividend yield	2.68%	[1]	2.63%	[1]	2.73%	[1]	2.62%	[1]
Expected volatility	45.79%	[2]	44.51%	[2]	45.96%	[2]	44.29%	[2]
Risk-free interest rate	1.41%	[3]	0.72%	[3]	1.09%	[3]	0.87%	[3]
Expected term of options	4 years 3 days	[4]	4 years 15 days	[4]	4 years 8 days	[4]	4 years 15 days	[4]
Weighted-avg. grant-date fair value (in dollars per share)	$ 6.98		$ 5.91		$ 6.54		$ 6.44

[1] Represents the Company’s estimated cash dividend yield over the expected term of option grant.

[2] )Amount is determined based on analysis of historical price volatility of the Company’s common stock. The expected volatility is based on the daily percentage change in the price of the stock over a period equal to the expected term of the option gran

[3] )Represents the U.S. Treasury yield over the expected term of the option gran

[4] )Represents the period of time that options granted are expected to be outstanding. Based on analysis of historical option exercise activity, the Company has determined that all employee groups exhibit similar exercise and post-vesting termination behavio