CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Parentheticals) - $ / shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Consolidated Statements of Stockholders' Equity
Shares issued in the acquisition of CNB and FNBNY Bancorp (in shares)		5,647,268	240,598
Cash dividend declared (in dollars per share)	$ 0.92	$ 0.92	$ 0.92
Shares issued in common stock offerings, net of offering costs	1,613,000
Number of shares issued for trust preferred securities conversions	10,344