Consolidated Statements of Changes in Shareholders' Equity (parenthetical) (USD $)	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Common Stock, Dividends, Per Share, Cash Paid	$ 0.16	$ 0.16
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period	0	0
Stock Issued During Period, Shares, Restricted Stock Award, Gross	122,834	5,200
Treasury Stock, Shares, Acquired	25,824	69,446
Stock Issued During Period, Shares, Treasury Stock Reissued	113,049	52,891