Note 4 - Investment Securities (Tables)

9 Months Ended

Sep. 30, 2011

Schedule of Available-for-sale Securities Reconciliation [Table Text Block]

	Investment Securities Available for Sale
	At September 30, 2011
			Gross		Gross
	Amortized		Unrealized		Unrealized			Fair
	Cost		Gains		Losses			Value
	(In thousands)
U.S. Treasury securities	$	3,541	$	59	$	-		$	3,600
Securities of U.S. government sponsored entities		128,157		383		(42	)		128,498
Residential mortgage-backed securities		93,328		5,984		(6	)		99,306
Commercial mortgage-backed securities		4,606		24		(6	)		4,624
Obligations of states and political subdivisions		257,481		8,801		(471	)		265,811
Residential collateralized mortgage obligations		51,919		2,384		-			54,303
Asset-backed securities		7,933		-		(282	)		7,651
FHLMC and FNMA stock		824		1,968		(5	)		2,787
Corporate securities		114,441		199		(1,863	)		112,777
Other securities		2,397		1,928		(42	)		4,283
Total	$	664,627	$	21,730	$	(2,717	)	$	683,640

	Investment Securities Available for Sale
	At December 31, 2010
			Gross		Gross
	Amortized		Unrealized		Unrealized			Fair
	Cost		Gains		Losses			Value
	(In thousands)
U.S. Treasury securities	$	3,554	$	-	$	(12	)	$	3,542
Securities of U.S. government sponsored entities		175,080		162		(2,365	)		172,877
Residential mortgage-backed securities		105,702		4,142		(15	)		109,829
Commercial mortgage-backed securities		5,081		7		(23	)		5,065
Obligations of states and political subdivisions		264,757		2,423		(6,047	)		261,133
Residential collateralized mortgage obligations		24,709		894		-			25,603
Asset-backed securities		9,060		-		(774	)		8,286
FHLMC and FNMA stock		824		42		(211	)		655
Corporate securities		79,356		200		(365	)		79,191
Other securities		2,655		2,699		(51	)		5,303
Total	$	670,778	$	10,569	$	(9,863	)	$	671,484

Schedule Of Held To Maturity Securities Reconciliation [Table Text Block]

	Investment Securities Held to Maturity
	At September 30, 2011
			Gross		Gross
	Amortized		Unrealized		Unrealized			Fair
	Cost		Gains		Losses			Value
	(In thousands)
Residential mortgage-backed securities	$	34,072	$	1,646	$	-		$	35,718
Obligations of states and political subdivisions		513,823		20,045		(371	)		533,497
Residential collateralized mortgage obligations		208,011		3,405		(2,301	)		209,115
Total	$	755,906	$	25,096	$	(2,672	)	$	778,330

	Investment Securities Held to Maturity
	At December 31, 2010
			Gross		Gross
	Amortized		Unrealized		Unrealized			Fair
	Cost		Gains		Losses			Value
	(In thousands)
Residential mortgage-backed securities	$	40,531	$	1,797	$	-		$	42,328
Obligations of states and political subdivisions		455,372		13,142		(1,142	)		467,372
Residential collateralized mortgage obligations		84,825		2,198		(2,012	)		85,011
Total	$	580,728	$	17,137	$	(3,154	)	$	594,711

Investments Classified by Contractual Maturity Date [Table Text Block]

	At September 30, 2011
	Securities Available				Securities Held
	for Sale				to Maturity
	Amortized		Fair		Amortized		Fair
	Cost		Value		Cost		Value
	(In thousands)
Maturity in years:
1 year or less	$	36,061	$	36,229	$	10,910	$	10,980
Over 1 to 5 years		275,954		275,655		136,765		140,613
Over 5 to 10 years		60,795		62,417		318,260		331,886
Over 10 years		138,743		144,036		47,888		50,018
Subtotal		511,553		518,337		513,823		533,497
Mortgage-backed securities and residential collateralized mortgage obligations		149,853		158,233		242,083		244,833
Other securities		3,221		7,070		-		-
Total	$	664,627	$	683,640	$	755,906	$	778,330

	At December 31, 2010
	Securities Available				Securities Held
	for Sale				to Maturity
	Amortized		Fair		Amortized		Fair
	Cost		Value		Cost		Value
	(In thousands)
Maturity in years:
1 year or less	$	21,362	$	21,460	$	6,057	$	6,103
Over 1 to 5 years		315,777		314,605		92,837		95,608
Over 5 to 10 years		64,565		64,804		351,407		360,602
Over 10 years		130,103		124,160		5,071		5,059
Subtotal		531,807		525,029		455,372		467,372
Mortgage-backed securities and residential collateralized mortgage obligations		135,492		140,497		125,356		127,339
Other securities		3,479		5,958		-		-
Total	$	670,778	$	671,484	$	580,728	$	594,711

Schedule of Unrealized Loss on Investments [Table Text Block]

	Investment Securities Available for Sale
	At September 30, 2011
	Less than 12 Months					12 Months or Longer					Total
			Unrealized					Unrealized					Unrealized
	Fair Value		Losses			Fair Value		Losses			Fair Value		Losses
	(In thousands)
Securities of U.S. government sponsored entities	$	15,012	$	(42	)	$	-	$	-		$	15,012	$	(42	)
Residential mortgage-backed securities		2,540		(3	)		973		(3	)		3,513		(6	)
Residential collateralized mortgage obligations		18		-			-		-			18		-
Commercial mortgage-backed securities		-		-			1,365		(6	)		1,365		(6	)
Obligations of states and political subdivisions		8,115		(102	)		22,117		(369	)		30,232		(471	)
Asset-backed securities		-		-			7,651		(282	)		7,651		(282	)
FHLMC and FNMA stock		-		-			1		(5	)		1		(5	)
Corporate securities		44,222		(1,187	)		24,324		(676	)		68,546		(1,863	)
Other securities		2		-			1,959		(42	)		1,961		(42	)
Total	$	69,909	$	(1,334	)	$	58,390	$	(1,383	)	$	128,299	$	(2,717	)

	Investment Securities Held to Maturity
	At September 30, 2011
	Less than 12 Months					12 Months or Longer					Total
			Unrealized					Unrealized					Unrealized
	Fair Value		Losses			Fair Value		Losses			Fair Value		Losses
	(In thousands)
Obligations of States and political subdivisions	$	22,747	$	(193	)	$	7,075	$	(178	)	$	29,822	$	(371	)
Residential collateralized mortgage obligations		32,010		(135	)		15,962		(2,166	)		47,972		(2,301	)
Total	$	54,757	$	(328	)	$	23,037	$	(2,344	)	$	77,794	$	(2,672	)

	Investment Securities Available for Sale
	At December 31, 2010
	Less than 12 Months					12 Months or Longer					Total
			Unrealized					Unrealized					Unrealized
	Fair Value		Losses			Fair Value		Losses			Fair Value		Losses
	(In thousands)
U.S. Treasury securities	$	3,542	$	(12	)	$	-	$	-		$	3,542	$	(12	)
Securities of U.S. government sponsored entities		146,083		(2,365	)		-		-			146,083		(2,365	)
Residential mortgage-backed securities		1,534		(15	)		-		-			1,534		(15	)
Commercial mortgage-backed securities		3,028		(23	)		-		-			3,028		(23	)
Obligations of states and political subdivisions		132,014		(5,505	)		10,341		(542	)		142,355		(6,047	)
Asset-backed securities		-		-			8,286		(774	)		8,286		(774	)
FHLMC and FNMA stock		550		(211	)		-		-			550		(211	)
Corporate securities		44,752		(365	)		-		-			44,752		(365	)
Other securities		1		-			1,948		(51	)		1,949		(51	)
Total	$	331,504	$	(8,496	)	$	20,575	$	(1,367	)	$	352,079	$	(9,863	)

	Investment Securities Held to Maturity
	At December 31, 2010
	Less than 12 Months					12 Months or Longer					Total
			Unrealized					Unrealized					Unrealized
	Fair Value		Losses			Fair Value		Losses			Fair Value		Losses
	(In thousands)
Obligations of states and political subdivisions	$	22,157	$	(382	)	$	18,663	$	(760	)	$	40,820	$	(1,142	)
Residential collateralized mortgage obligations		-		-			20,182		(2,012	)		20,182		(2,012	)
Total	$	22,157	$	(382	)	$	38,845	$	(2,772	)	$	61,002	$	(3,154	)

Interest Income From Investments [Table Text Block]

	For the Three Months				For the Nine Months
	Ended September 30,				Ended September 30,
	2011		2010		2011		2010
	(In thousands)
Taxable	$	4,624	$	3,957	$	12,604	$	12,585
Tax-exempt		7,453		6,812		22,421		20,503
Total interest income from investment securities	$	12,077	$	10,769	$	35,025	$	33,088