Securities (Tables)

3 Months Ended

Mar. 31, 2013

Securities [Abstract]

Summary of Amortized Cost and Fair Value of Available-for-sale and Held-to-maturity Securities

The amortized cost and fair value of securities available-for-sale and held-to-maturity at March 31, 2013 and December 31, 2012 are summarized as follows (in thousands):

	March 31, 2013
	Amortized  Cost			Gross Unrealized Gains			Gross Unrealized Losses			Fair Value
Securities available-for-sale:
U.S. government agency securities		$	139,609		$	55		$	1,420		$	138,244
Mortgage-backed securities			358,702			14,750			1,595			371,857
State and municipal securities			134,731			10,563			187			145,107
Agency-backed securities			17,393			-			35			17,358
Corporate notes and other			9,512			1,469			2			10,979
		$	659,947		$	26,837		$	3,239		$	683,545
Securities held-to-maturity:
State and municipal securities		$	40,459		$	9		$	91		$	40,377
		$	40,459		$	9		$	91		$	40,377
	December 31, 2012
	Amortized  Cost			Gross Unrealized Gains			Gross Unrealized Losses			Fair Value
Securities available-for-sale:
U.S. government agency securities		$	110,817		$	49		$	414		$	110,452
Mortgage-backed securities			360,504			15,770			623			375,651
State and municipal securities			177,364			14,489			126			191,727
Agency-backed securities			17,361			-			9			17,352
Corporate notes and other			9,881			1,519			4			11,396
		$	675,927		$	31,827		$	1,176		$	706,578
Securities held-to-maturity:
State and municipal securities		$	575		$	8		$	-		$	583
		$	575		$	8		$	-		$	583

Amortized Cost and Fair Value of Debt Securities by Contractual Maturity

The amortized cost and fair value of debt securities as of March 31, 2013 by contractual maturity are shown below. Actual maturities may differ from contractual maturities of mortgage- and asset-backed securities since the mortgages and assets underlying the securities may be called or prepaid with or without penalty. Therefore, these securities are not included in the maturity categories in the following summary (in thousands):

	March 31, 2013
	Available-for-sale				Held-to-maturity
	Amortized Cost		Fair Value		Amortized  Cost		Fair Value
Due in one year or less	$	9,570	$	9,717	$	1,891	$	1,891
Due in one year to five years		20,923		21,543		1,016		1,021
Due in five years to ten years		142,376		149,503		9,510		9,509
Due after ten years		110,983		113,567		28,042		27,956
Mortgage-backed securities		358,702		371,857		-		-
Asset-backed securities		17,393		17,358		-		-
	$	659,947	$	683,545	$	40,459	$	40,377

Classification of Investments According to Term of Unrealized Losses of Less than Twelve Months or Twelve Months or Longer

At March 31, 2013 and December 31, 2012, included in securities were the following available-for-sale investments with unrealized losses.  The information below classifies these investments according to the term of the unrealized losses of less than twelve months or twelve months or longer (in thousands):

	Investments with an  Unrealized Loss of less than 12 months				Investments with an Unrealized Loss of 12 months or longer				Total Investments with an Unrealized Loss
	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
At March 31, 2013:
U.S. government agency securities	$	121,169	$	1,420	$	-	$	-	$	121,169	$	1,420
Mortgage-backed securities		67,940		1,595		-		-		67,940		1,595
State and municipal securities		41,084		187		-		-		41,084		187
Agency-backed securities		17,358		35		-		-		17,358		35
Corporate notes		364		2		-		-		364		2
Total temporarily-impaired securities	$	247,915	$	3,239	$	-	$	-	$	247,915	$	3,239
At December 31, 2012:
U.S. government agency securities	$	78,899	$	414	$	-	$	-	$	78,899	$	414
Mortgage-backed securities		40,988		623		-		-		40,988		623
State and municipal securities		5,179		126		-		-		5,179		126
Agency-backed securities		17,353		9		-		-		17,353		9
Corporate notes		162		4		-		-		162		4
Total temporarily-impaired securities	$	142,581	$	1,176	$	-	$	-	$	142,581	$	1,176