Consolidated Statements of Changes in Shareholders' Equity (parenthetical) (USD $)	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Common Stock, Dividends, Per Share, Cash Paid	$ 0.32	$ 0.32
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period	0	0
Stock Issued During Period, Shares, Restricted Stock Award, Gross	532,282	570,243
Treasury Stock, Shares, Acquired	193,830	180,558
Stock Issued During Period, Shares, Treasury Stock Reissued	144,923	62,252