Consolidated Statements of Changes in Shareholders' Equity (Unaudited) (Parenthetical) - $ / shares	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Stock repurchased during period (in shares)	47,976	51,982
Stock options exercised (in shares)	4,134	14,642
Vesting of restricted stock (in shares)	3,046
Equity-based compensation (in shares)	30,995	26,760
Cash dividends paid (in dollars per share)	$ 0.48	$ 0.46
Common Stock [Member]
Issuance of common stock (in shares)		825,586