CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (UNAUDITED) (Parenthetical) (USD $)	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
Additional Paid-in Capital [Member]
Number of shares of treasury stock distributed for director's compensation ( in shares)	10,238	10,378
Number of shares of treasury stock for employee compensation (in shares)	3,453	2,392
Number shares of treasury stock for deferred director's compensation (in shares)	3,240	286
Number shares of treasury stock for employee restricted stock awards (in shares)	2,095	4,387
Number of treasury stock shares sold (in shares)	10,100	3,900
Issuance of shares related to FOFC Merger (in shares)		1,009,942
Retained Earnings [Member]
Cash dividends declared (in dollars per share)	0.75	0.75
Treasury Stock [Member]
Number of shares of treasury stock distributed for director's compensation ( in shares)	10,238	10,378
Number of shares of treasury stock for employee compensation (in shares)	3,453	2,392
Number shares of treasury stock for deferred director's compensation (in shares)	3,240	286
Number shares of treasury stock for employee restricted stock awards (in shares)	2,095	4,387
Number of treasury stock shares purchased (in shares)	23,120	13,981
Number of treasury stock shares sold (in shares)	10,100	3,900
Common Stock [Member]
Issuance of shares related to FOFC Merger (in shares)		1,009,942