Consolidated Statements of Changes in Shareholders' Equity (Unaudited) (Parenthetical) - $ / shares	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Consolidated Statements of Changes in Shareholders' Equity (Unaudited) [Abstract]
Cash dividend declared (in dollars per share)	$ 0.1312	$ 0.1312
Purchase of treasury stock (in shares)	14,881
Sale of treasury stock (in shares)	194,139	202,072
Stock options exercised and related tax (in shares)	19,429