CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (USD $) In Thousands, unless otherwise specified	Total	Common Stock	Surplus	Comprehensive Income	Retained Earnings	Treasury Stock	Accumulated Other Comprehensive Income (Loss)
Balance at Dec. 31, 2008	$ 56,139	$ 64	$ 20,452		$ 40,081	$ (6,309)	$ 1,851
Increase (Decrease) in Stockholders' Equity
Net income	8,763			8,763	8,763
Shares issued under the dividend reinvestment plan ("DRP"), net of offering costs	255		252			3
Stock awards granted			(1,664)			1,664
Vesting of stock awards	(52)					(52)
Exercise of stock options	51		148			(97)
Tax effect of stock plans	12		12
Shared based compensation expense	750		750
Cash dividend declared, $0.69, $0.92 and $0.92 per share for the year ended December 31, 2011, 2010 and 2009, respectively	(5,734)				(5,734)
Other comprehensive income, net of deferred taxes:
Change in unrealized net gains in securities available for sale, net of reclassification and deferred tax effects	1,832			1,832			1,832
Adjustment to pension liability, net of deferred taxes	(161)			(161)			(161)
Comprehensive income	10,434			10,434
Balance at Dec. 31, 2009	61,855	64	19,950		43,110	(4,791)	3,522
Increase (Decrease) in Stockholders' Equity
Net income	9,166			9,166	9,166
Shares issued under the dividend reinvestment plan ("DRP"), net of offering costs	1,395		1,389			6
Stock awards granted			(1,274)			1,274
Vesting of stock awards	(37)					(37)
Exercise of stock options	17		(11)			28
Tax effect of stock plans	11		11
Shared based compensation expense	881		881
Cash dividend declared, $0.69, $0.92 and $0.92 per share for the year ended December 31, 2011, 2010 and 2009, respectively	(5,813)				(5,813)
Other comprehensive income, net of deferred taxes:
Change in unrealized net gains in securities available for sale, net of reclassification and deferred tax effects	(1,700)			(1,700)			(1,700)
Adjustment to pension liability, net of deferred taxes	(55)			(55)			(55)
Comprehensive income	7,411			7,411
Balance at Dec. 31, 2010	65,720	64	20,946		46,463	(3,520)	1,767
Increase (Decrease) in Stockholders' Equity
Net income	10,359			10,359	10,359
Shares issued under the dividend reinvestment plan ("DRP")	4,627	3	4,613			11
Shares issued in common stock offerings, net of offering costs (1,407,220 shares)	23,461	14	23,447
Shares issued in the acquisition of Hamptons State Bank (273,479 shares)	5,850	3	5,847
Stock awards granted			(1,889)			1,889
Stock awards forfeited			39			(39)
Vesting of stock awards	(128)					(128)
Tax effect of stock plans	(16)		(16)
Shared based compensation expense	1,047		1,047
Cash dividend declared, $0.69, $0.92 and $0.92 per share for the year ended December 31, 2011, 2010 and 2009, respectively	(4,594)				(4,594)
Other comprehensive income, net of deferred taxes:
Change in unrealized net gains in securities available for sale, net of reclassification and deferred tax effects	2,185			2,185			2,185
Adjustment to pension liability, net of deferred taxes	(1,524)			(1,524)			(1,524)
Comprehensive income	11,020			11,020
Balance at Dec. 31, 2011	$ 106,987	$ 84	$ 54,034		$ 52,228	$ (1,787)	$ 2,428