Note 6 - Investment Securities (Tables)

3 Months Ended

Mar. 31, 2012

	March 31, 2012
			Gross		Gross
	Amortized		Unrealized		Unrealized
	Cost		Gains		Losses		Fair Value
	(In thousands)
Securities Held-to-Maturity
U.S. government sponsored entities	$	99,978	$	945	$	-	$	100,923
State and municipal securities		129,444		6,057		-		135,501
Mortgage-backed securities		845,314		39,860		-		885,174
Corporate debt securities		9,972		-		46		9,926
Total securities held-to-maturity	$	1,084,708	$	46,862	$	46	$	1,131,524
Securities Available-for-Sale
U.S. treasury securities	$	99,904	$	-	$	49	$	99,855
U.S. government sponsored entities		300,000		270		106		300,164
Mortgage-backed securities		493,043		9,889		537		502,395
Collateralized mortgage obligations		14,234		519		90		14,663
Asset-backed securities		164		-		5		159
Corporate debt securities		410,195		552		23,397		387,350
Mutual funds		6,000		40		16		6,024
Preferred stock of government sponsored entities		569		1,056		-		1,625
Trust preferred securities		35,993		853		-		36,846
Other equity securities		1,469		3,192		-		4,661
Total securities available-for-sale	$	1,361,571	$	16,371	$	24,200	$	1,353,742
Total investment securities	$	2,446,279	$	63,233	$	24,246	$	2,485,266

	December 31, 2011
			Gross		Gross
	Amortized		Unrealized		Unrealized
	Cost		Gains		Losses		Fair Value
	(In thousands)
Securities Held-to-Maturity
U.S. government sponsored entities	$	99,966	$	1,406	$	-	$	101,372
State and municipal securities		129,577		7,053		-		136,630
Mortgage-backed securities		913,990		42,351		-		956,341
Corporate debt securities		9,971		-		337		9,634
Total securities held-to-maturity	$	1,153,504	$	50,810	$	337	$	1,203,977
Securities Available-for-Sale
U.S. government sponsored entities	$	500,007	$	1,226	$	7	$	501,226
State and municipal securities		1,869		59		-		1,928
Mortgage-backed securities		325,706		12,361		436		337,631
Collateralized mortgage obligations		16,184		540		238		16,486
Asset-backed securities		172		-		6		166
Corporate debt securities		412,045		113		31,729		380,429
Mutual funds		6,000		48		13		6,035
Preferred stock of government sponsored entities		569		1,085		-		1,654
Trust preferred securities		45,501		486		24		45,963
Other equity securities		1,468		1,492		-		2,960
Total securities available-for-sale	$	1,309,521	$	17,410	$	32,453	$	1,294,478
Total investment securities	$	2,463,025	$	68,220	$	32,790	$	2,498,455

	Securities Available-for-Sale				Securities Held-to-Maturity
	Amortized Cost		Fair Value		Amortized Cost		Fair Value
	(In thousands)
Due in one year or less	$	34,890	$	34,950	$	99,978	$	100,923
Due after one year through five years		225,252		224,709		-		-
Due after five years through ten years		631,327		614,458		39,105		40,722
Due after ten years (1)		470,102		479,625		945,625		989,879
Total	$	1,361,571	$	1,353,742	$	1,084,708	$	1,131,524

	As of March 31, 2012
	Temporarily Impaired Securities
	Less than 12 months				12 months or longer				Total
	Fair		Unrealized		Fair		Unrealized		Fair		Unrealized
	Value		Losses		Value		Losses		Value		Losses
	(Dollars in thousands)
Securities Held-to-Maturity
Corporate debt securities	$	9,925	$	46		-		-	$	9,925	$	46
Total securities held-to-maturity	$	9,925	$	46	$	-	$	-	$	9,925	$	46
Securities Available-for-Sale
U.S. treasury securities	$	99,855	$	49	$	-	$	-	$	99,855	$	49
U.S. government sponsored entities		49,894		106		-		-		49,894		106
Mortgage-backed securities		154,114		532		535		3		154,649		535
Mortgage-backed securities-Non-agency		-		-		99		2		99		2
Collateralized mortgage obligations		-		-		503		90		503		90
Asset-backed securities		-		-		158		5		158		5
Corporate debt securities		145,771		9,180		160,783		14,217		306,554		23,397
Mutual funds		1,983		16		-		-		1,983		16
Total securities available-for-sale	$	451,617	$	9,883	$	162,078	$	14,317	$	613,695	$	24,200
Total investment securities	$	461,542	$	9,929	$	162,078	$	14,317	$	623,620	$	24,246

	As of December 31, 2011
	Temporarily Impaired Securities
	Less than 12 months				12 months or longer				Total
	Fair		Unrealized		Fair		Unrealized		Fair		Unrealized
	Value		Losses		Value		Losses		Value		Losses
	(Dollars in thousands)
Securities Held-to-Maturity
Corporate debt securities	$	9,635	$	337	$	-	$	-	$	9,635	$	337
Total securities held-to-maturity	$	9,635	$	337	$	-	$	-	$	9,635	$	337
Securities Available-for-Sale
U.S. government sponsored entities	$	49,993	$	7	$	-	$	-	$	49,993	$	7
Mortgage-backed securities		564		4		35		1		599		5
Mortgage-backed securities-Non-agency		-		-		6,719		431		6,719		431
Collateralized mortgage obligations		-		-		570		238		570		238
Asset-backed securities		-		-		166		6		166		6
Corporate debt securities		185,577		14,201		172,857		17,528		358,434		31,729
Mutual funds		1,987		13		-		-		1,987		13
Trust preferred securities		5,674		24		-		-		5,674		24
Total securities available-for-sale	$	243,795	$	14,249	$	180,347	$	18,204	$	424,142	$	32,453
Total investment securities	$	253,430	$	14,586	$	180,347	$	18,204	$	433,777	$	32,790