Consolidated Statements of Changes in Shareholders' Equity (Parenthetical) (USD $)	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Dividends declared per share (in dollars per share)	$ 0.50	$ 0.45
Treasury stock issued for restricted awards, net of forfeitures	80,455	22,189
Forfeitures of restricted stock, shares	21,783	16,093
Retained Earnings [Member]
Dividends declared per share (in dollars per share)	$ 0.50	$ 0.45
Treasury stock issued for restricted awards, net of forfeitures	80,455	22,189
Forfeitures of restricted stock, shares	21,783	16,093
Treasury Stock [Member]
Treasury stock issued for restricted awards, net of forfeitures	80,455	22,189
Forfeitures of restricted stock, shares	21,783	16,093