Investment Securities (Tables)

12 Months Ended

Dec. 31, 2012

Investments, Debt and Equity Securities [Abstract]

Schedule of amortized cost and approximate fair values of securities

	December 31, 2012
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Available-for-sale securities
Federal agencies	$	42,581	$	849	$	(21	)	$	43,409
State and municipal		29,331		1,865		(34	)		31,162
Government-sponsored enterprise (GSE) residential mortgage-backed and other asset-backed agency securities		35,258		774		(10	)		36,022
Corporate		3,652		47		(522	)		3,177
Total investment securities	$	110,822	$	3,535	$	(587	)	$	113,770
	December 31, 2011
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Available-for-sale securities
Federal agencies	$	37,107	$	844	$	(34	)	$	37,917
State and municipal		27,076		1,663		(24	)		28,715
Government-sponsored enterprise (GSE) residential mortgage-backed and other asset-backed agency securities		33,565		1,138		(6	)		34,697
Corporate		4,115		—		(755	)		3,360
Total investment securities	$	101,863	$	3,645	$	(819	)	$	104,689

Schedule of amortized cost and fair values of securities by contractual maturity

	Available-for-Sale
	Amortized Cost		Fair Value
Within one year	$	6,205	$	6,256
One to five years		20,198		20,841
Five to ten years		30,927		31,798
After ten years		18,234		18,853
		75,564		77,748
Government-sponsored enterprise (GSE) residential mortgage-backed and other asset-backed agency securities		35,258		36,022
Totals	$	110,822	$	113,770

Schedule of unrealized loss on investments

	December 31, 2012
	Less than 12 Months					12 Months or More					Total
Description of Securities	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
Federal agencies	$	3,979	$	(21	)	$	—	$	—		$	3,979	$	(21	)
State and municipal		3,856		(34	)		—		—			3,856		(34	)
Government-sponsored enterprise (GSE) residential mortgage-backed and other asset-backed agency securities		2,847		(10	)		—		—			2,847		(10	)
Corporate		—		—			1,197		(522	)		1,197		(522	)
Total temporarily impaired securities	$	10,682	$	(65	)	$	1,197	$	(522	)	$	11,879	$	(587	)
	December 31, 2011
	Less than 12 Months					12 Months or More					Total
Description of Securities	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
Federal agencies	$	4,991	$	(34	)	$	—	$	—		$	4,991	$	(34	)
State and municipal		733		(20	)		773		(4	)		1,506		(24	)
Government-sponsored enterprise (GSE) residential mortgage-backed and other asset-backed agency securities		1,012		(6	)		—		—			1,012		(6	)
Corporate		2,270		(84	)		1,090		(671	)		3,360		(755	)
Total temporarily impaired securities	$	9,006	$	(144	)	$	1,863	$	(675	)	$	10,869	$	(819	)