Consolidated Statements of Stockholders' Equity (USD $) In Thousands, unless otherwise specified	Total	Common Stock	Surplus	Retained Earnings	Treasury Stock	Accumulated Other Comprehensive Loss
Balance at Dec. 31, 2012	$ 118,672	$ 89	$ 64,208	$ 55,102	$ (309)	$ (418)
Increase (Decrease) in Stockholders' Equity
Net income	9,488			9,488
Shares issued under the dividend reinvestment plan ("DRP")	5,611	3	5,608
Stock awards granted and distributed		1	(435)		434
Stock awards forfeited			79		(79)
Vesting of stock awards	(149)				(149)
Income tax effect of stock plans	(9)		(9)
Share based compensation expense	977		977
Cash dividend declared, 0.69 and 0.46 per share for six months ended on September 30, 2014 and 2013	(4,177)			(4,177)
Other comprehensive (loss) income, net of deferred income taxes	(11,406)					(11,406)
Balance at Sep. 30, 2013	119,007	93	70,428	60,413	(103)	(11,824)
Balance at Dec. 31, 2013	159,460	113	111,377	61,441	(235)	(13,236)
Increase (Decrease) in Stockholders' Equity
Net income	9,595			9,595
Shares issued under the dividend reinvestment plan ("DRP")	475		475
Shares issued in the acquisition of FNBNY Bancorp, net of offering costs (240,598 shares)	5,948	2	5,946
Stock awards granted and distributed		1	(432)		431
Stock awards forfeited			58		(58)
Vesting of stock awards	(147)				(147)
Exercise of stock options	7		(2)		9
Income tax effect of stock plans	30		30
Share based compensation expense	916		916
Cash dividend declared, 0.69 and 0.46 per share for six months ended on September 30, 2014 and 2013	(7,971)			(7,971)
Other comprehensive (loss) income, net of deferred income taxes	6,662					6,662
Balance at Sep. 30, 2014	$ 174,975	$ 116	$ 118,368	$ 63,065		$ (6,574)