Investment Securities (Tables)

3 Months Ended

Mar. 31, 2013

Investment Securities [Abstract]

Amortized Cost And Fair Value Of Investment Securities

		Amortized		Unrealized		Unrealized		Fair
		Cost		Gains		Losses		Value
March 31, 2013
Securities available for sale:
U.S. Government agencies and government
sponsored enterprises	$	125,018	$	3,489	$	101	$	128,406
State and political subdivisions		211,986		6,150		262		217,874
Mortgage-backed securities:
Federal National Mortgage Association		158,199		3,915		265		161,849
Federal Home Loan Mortgage Corporation		41,314		1,393		-		42,707
Government National Mortgage Association		51,619		3,235		-		54,854
Collateralized mortgage obligations:
Federal National Mortgage Association		69,371		1,464		142		70,693
Federal Home Loan Mortgage Corporation		110,463		1,103		747		110,819
Government National Mortgage Association		62,614		1,942		42		64,514
Privately issued		29		1,092		-		1,121
Total collateralized mortgage obligations		242,477		5,601		931		247,147
Total mortgage-backed securities		493,609		14,144		1,196		506,557
Asset-backed securities		62		538		-		600
Total available for sale securities	$	830,675	$	24,321	$	1,559	$	853,437
Securities held to maturity:
State and political subdivisions	$	17,747	$	513	$	-	$	18,260

December 31, 2012
Securities available for sale:
U.S. Government agencies and government
sponsored enterprises	$	128,097	$	3,667	$	69	$	131,695
State and political subdivisions		188,997		6,285		72		195,210
Mortgage-backed securities:
Federal National Mortgage Association		147,946		4,394		188		152,152
Federal Home Loan Mortgage Corporation		65,426		1,430		-		66,856
Government National Mortgage Association		56,166		3,279		-		59,445
Collateralized mortgage obligations:
Federal National Mortgage Association		60,805		1,865		2		62,668
Federal Home Loan Mortgage Corporation		78,581		1,911		-		80,492
Government National Mortgage Association		70,989		2,168		-		73,157
Privately issued		73		1,025		-		1,098
Total collateralized mortgage obligations		210,448		6,969		2		217,415
Total mortgage-backed securities		479,986		16,072		190		495,868
Asset-backed securities		121		902		-		1,023
Total available for sale securities	$	797,201	$	26,926	$	331	$	823,796
Securities held to maturity:
State and political subdivisions	$	17,905	$	573	$	-	$	18,478

Scheduled Maturities Of Securities Available For Sale And Securities Held To Maturity

		Amortized		Fair
		Cost		Value
Debt securities available for sale:
Due in one year or less	$	20,802	$	20,894
Due from one to five years		95,759		99,825
Due after five years through ten years		365,312		373,338
Due after ten years		348,802		359,380
	$	830,675	$	853,437
Debt securities held to maturity:
Due in one year or less	$	12,740	$	12,818
Due from one to five years		4,212		4,474
Due after five years through ten years		708		852
Due after ten years		87		116
	$	17,747	$	18,260

Investments' Gross Unrealized Losses And Fair Value

		Less than 12 months				12 months or longer				Total
		Fair		Unrealized		Fair	Unrealized			Fair	Unrealized
		Value		Losses		Value	Losses			Value		Losses
March 31, 2013
U.S. Government agencies and government
sponsored enterprises	$	27,857	$	95	$	2,912	$	6	$	30,769	$	101
State and political subdivisions		26,532		262		-		-		26,532		262
Mortgage-backed securities:
Federal National Mortgage Association		37,063		265		-		-		37,063		265
Collateralized mortgage obligations:
Federal National Mortgage Association		12,693		140		1,102		2		13,795		142
Federal Home Loan Mortgage Corporation		46,770		747		-		-		46,770		747
Government National Mortgage Association		3,333		42		-		-		3,333		42
Total collateralized mortgage obligations		62,796		929		1,102		2		63,898		931
Total mortgage-backed securities		99,859		1,194		1,102		2		100,961		1,196
Total temporarily impaired securities	$	154,248	$	1,551	$	4,014	$	8	$	158,262	$	1,559

December 31, 2012
U.S. Government agencies and government
sponsored enterprises	$	13,265	$	67	$	2,967	$	2	$	16,232	$	69
State and political subdivisions		8,471		72		-		-		8,471		72
Mortgage-backed securities:
Federal National Mortgage Association		25,200		188		-		-		25,200		188
Collateralized mortgage obligations:
Federal National Mortgage Association		-		-		1,173		2		1,173		2
Total collateralized mortgage obligations		-		-		1,173		2		1,173		2
Total mortgage-backed securities		25,200		188		1,173		2		26,373		190
Total temporarily impaired securities	$	46,936	$	327	$	4,140	$	4	$	51,076	$	331