Consolidated Statements of Changes in Shareholders' Equity (Parenthetical) - $ / shares	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Statement of Stockholders' Equity [Abstract]
Stock repurchased during period (in shares)		47,976
Stock options exercised (in shares)	3,300	4,134
Vesting of restricted stock (in shares)	6,468	3,046
Equity-based compensation (in shares)	21,562	30,995
Cash dividends paid (in dollars per share)	$ 0.48	$ 0.48