Consolidated Statements of Changes in Stockholders' Equity (USD $) In Thousands, except Share data	Total	Common stock [Member]	Accumulated deficit [Member]	Treasury Stock [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
BALANCE at Dec. 31, 2012	$ 280,867	$ 303,794	$ (24,145)	$ (2,718)	$ 3,936
BALANCE, Shares at Dec. 31, 2012		29,941,967
NET INCOME	17,628		17,628
Other comprehensive loss, net of tax	(5,768)				(5,768)
Stock based compensation	669	669
Issuance of restricted stock awards		(1,301)		1,301
Issuance of stock for acquisition	57,419	57,419
Issuance of stock for acquisition, Shares		5,794,079
Issuance of stock options for acquisition	1,603	1,603
Issuance of stock to dividend reinvestment and stock purchase plan	145	108	(901)	938
Issuance of stock to dividend reinvestment and stock purchase plan, Shares		27,270
Exercise of stock options, net of excess tax benefits	736	257		479
Exercise of stock options, net of excess tax benefits, Shares	98,895	59,831
Cash dividends, common stock	(5,774)		(5,774)
BALANCE at Sep. 30, 2013	$ 347,525	$ 362,549	$ (13,192)		$ (1,832)
BALANCE, Shares at Sep. 30, 2013		35,823,147