Earnings Per Share, Stock-Based Compensation and Share Repurchase Plan (Earnings Per Share) (Details) - shares shares in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Shareholders' Equity, Earnings Per Share And Stock-Based Compensation [Abstract]
Basic shares outstanding	98,528	108,002	98,998	108,086
Effect of restricted stock units	365	419	403	485
Diluted shares outstanding	98,893	108,421	99,401	108,571