Summarized Quarterly Information (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2011

Summarized Quarterly Information (Unaudited) [Abstract]

Schedule of Quarterly Financial Information [Table Text Block]

	2012
(Dollars in thousands, except per share data)	First Quarter			Second Quarter			Third Quarter			Fourth Quarter
Total interest income	$	17,612		$	17,341		$	16,942		$	17,575
Total interest expense	4,180			3,729			3,621			3,465
Net interest income	13,432			13,612			13,321			14,110
Recovery of loan losses	(2,137		)	(1,120		)	(956		)	(503		)
Net loss on asset disposals and other transactions	(3,062		)	(43		)	(161		)	(1,060		)
Net gain on investment securities	3,163			—			112			273
Other income	9,082			8,498			8,572			8,819
Intangible asset amortization	107			109			134			159
FDIC insurance	309			223			257			213
Other expenses	14,600			15,354			15,275			16,734
Income tax expense	3,079			2,471			2,310			1,665
Net income	6,657			5,030			4,824			3,874
Preferred dividends	—			—			—			—
Net income available to common shareholders	$	6,657		$	5,030		$	4,824		$	3,874
Earnings per common share - Basic	$	0.63		$	0.47		$	0.45		$	0.36
Earnings per common share - Diluted	$	0.63		$	0.47		$	0.45		$	0.36
Weighted-average common shares outstanding - Basic	10,513,388			10,524,429			10,530,800			10,542,810
Weighted-average common shares outstanding - Diluted	10,513,388			10,524,429			10,530,876			10,542,810

	2011
(Dollars in thousands, except per share data)	First Quarter		Second Quarter			Third Quarter		Fourth Quarter
Total interest income	$	19,317	$	18,941		$	18,400	$	18,475
Total interest expense	5,822		5,510			5,136		4,686
Net interest income	13,495		13,431			13,264		13,789
Provision for (recovery of) loan losses	5,311		2,295			865		(473		)
Net gain (loss) on asset disposals and other transactions	60		(556		)	389		(809		)
Net gain on investment securities	360		56			57		—
Other income	8,374		7,891			8,391		8,288
Intangible asset amortization	162		152			141		131
FDIC insurance	662		450			440		315
Other expenses	13,794		14,117			14,849		16,118
Income tax expense	491		887			1,885		1,333
Net income	1,869		2,921			3,921		3,844
Preferred dividends	523		238			237		345
Net income available to common shareholders	$	1,346	$	2,683		$	3,684	$	3,499
Earnings per common share - Basic	$	0.13	$	0.26		$	0.35	$	0.33
Earnings per common share - Diluted	$	0.13	$	0.26		$	0.35	$	0.33
Weighted-average common shares outstanding - Basic	10,471,819		10,478,362			10,484,609		10,494,210
Weighted-average common shares outstanding - Diluted	10,477,360		10,507,895			10,519,673		10,514,960