Investment Securities (Tables)

9 Months Ended

Sep. 30, 2012

Investment Securities [Abstract]

Investment securities available for sale and held to maturity

	September 30, 2012									December 31, 2011
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value		Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
Available for sale:
U.S. government agency securities	$	12,090	$	52	$	(6	)	$	12,136	$	—	$	—	$	—		$	—
Obligations of states and political subdivisions		155,883		14,528		—			170,411		156,663		15,329		—			171,992
Collateralized mortgage obligations		91,675		4,289		—			95,964		122,155		5,768		(1,153	)		126,770
Mortgage-backed securities		36,352		735		(31	)		37,056		391		51		—			442
Corporate Bonds		12,737		364		—			13,101		—		—		—			—
Balance at end of period		308,737		19,968		(37	)		328,668		279,209		21,148		(1,153	)		299,204
Held to maturity:
Obligations of states and political subdivisions		8,164		885		—			9,049		9,315		846		—			10,161
Total investment securities	$	316,901	$	20,853	$	(37	)	$	337,717	$	288,524	$	21,994	$	(1,153	)	$	309,365

Investment securities amortized cost, maturities, and approximate fair value

	September 30, 2012
	Amortized Cost		Fair Value
Securities Available for sale:
Due in one year or less	$	3,232	$	3,277
Due from one to five years		82,842		89,291
Due from five to ten years		87,431		95,843
Due after ten years		7,205		7,237
Subtotal		180,710		195,648
Collateralized mortgage obligations		91,675		95,964
Mortgage-backed securities		36,352		37,056
Total securities available for sale		308,737		328,668
Securities Held to maturity:
Due in one year or less		1,559		1,574
Due from one to five years		6,127		6,939
Due from five to ten years		478		536
Subtotal		8,164		9,049
Total investment securities	$	316,901	$	337,717

Length of time individual securities for held-to-maturity and available-for-sale

			Less than 12 months				12 months or longer				Total
As of September 30, 2012 Type of securities	Number of Securities		Fair value		Unrealized Losses		Fair value		Unrealized Losses		Fair value		Unrealized Losses
U.S. government agency securities		1	$	4,036	$	6	$	—	$	—	$	4,036	$	6
Mortgage-backed securities		1		4,827		31		—		—		4,827		31
Total		2	$	8,863	$	37	$	—	$	—	$	8,863	$	37
			Less than 12 months				12 months or longer				Total
As of December 31, 2011 Type of securities	Number of Securities		Fair value		Unrealized Losses		Fair value		Unrealized Losses		Fair value		Unrealized Losses
Collateralized mortgage obligations		2	$	—	$	—	$	7,994	$	1,153	$	7,994	$	1,153
Total		2	$	—	$	—	$	7,994	$	1,153	$	7,994	$	1,153

Schedule of non agency private collateralized mortgage obligation securities

(in thousands)	Year of Vintage 2006		Total Fair Value		Total Amortized Cost		Total OTTI Related to Credit Loss at December 31, 2011
Rating:
Total Non-Agency
CMOs
CCC and Below	$	7,994	$	7,994	$	9,147	$	1,052
Total Non-Agency
CMO’s	$	7,994	$	7,994	$	9,147	$	1,052