Consolidated Statements of Changes in Shareholders' Equity (Parenthetical) - $ / shares	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Stock repurchased during period (in shares)		38,887
Stock options exercised (in shares)	3,300	2,484
Vesting of restricted stock (in shares)	6,468	3,046
Equity-based compensation (in shares)	17,393	27,054
Cash dividends paid (in dollars per share)	$ 0.24	$ 0.24