Note 4 - Investment Securities (Tables)

12 Months Ended

Dec. 31, 2012

	At December 31, 2012
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
	(In thousands)
Securities Held-to-Maturity
State and municipal securities	$	129,037	$	9,268	$	-	$	138,305
Mortgage-backed securities		634,757		40,801		-		675,558
Corporate debt securities		9,974		69		-		10,043
Total securities held-to-maturity	$	773,768	$	50,138	$	-	$	823,906
Securities Available-for-Sale
U.S. treasury securities	$	509,748	$	228	$	5	$	509,971
Mortgage-backed securities		404,505		12,194		5		416,694
Collateralized mortgage obligations		9,772		430		34		10,168
Asset-backed securities		145		-		4		141
Corporate debt securities		349,973		106		14,102		335,977
Mutual funds		6,000		79		-		6,079
Preferred stock of government sponsored entities		569		1,766		-		2,335
Trust preferred securities		9,964		151		-		10,115
Total securities available-for-sale	$	1,290,676	$	14,954	$	14,150	$	1,291,480
Total investment securities	$	2,064,444	$	65,092	$	14,150	$	2,115,386

	At December 31, 2011
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
Securities Held-to-Maturity	(In thousands)
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	$	349,899	$	349,940	$	-	$	-
Due after one year through five years		375,041		370,241		-		-
Due after five years through ten years		194,901		190,047		62,235		66,523
Due after ten years (1)		370,835		381,252		711,533		757,383
Total	$	1,290,676	$	1,291,480	$	773,768	$	823,906

	As of December 31, 2012
	Temporarily Impaired Securities
	Less than 12 months						12 months or longer						Total
	Fair Value		Unrealized Losses		No. of Issuances		Fair Value		Unrealized Losses		No. of Issuances		Fair Value		Unrealized Losses		No. of Issuances
	(Dollars in thousands)
Securities Held-to-Maturity
Total securities held-to-maturity	$	-	$	-		-	$	-	$	-		-	$	-	$	-		-
Securities Available-for-Sale
U.S. treasury securities	$	49,969	$	5		1	$	-	$	-		-	$	49,969	$	5		1
Mortgage-backed securities		231		1		2		170		1		6		401		2		8
Mortgage-backed securities-Non-agency		-		-		-		96		2		1		96		2		1
Collateralized mortgage obligations		-		-		-		439		35		4		439		35		4
Asset-backed securities		-		-		-		141		4		1		141		4		1
Corporate debt securities		52,468		2,532		4		253,430		11,570		22		305,898		14,102		26
Total securities available-for-sale	$	102,668	$	2,538		7	$	254,276	$	11,612		34	$	356,944	$	14,150		41
Total investment securities	$	102,668	$	2,538		7	$	254,276	$	11,612		34	$	356,944	$	14,150		41

	As of December 31, 2011
	Temporarily Impaired Securities
	Less than 12 months						12 months or longer						Total
	Fair Value		Unrealized Losses		No. of Issuances		Fair Value		Unrealized Losses		No. of Issuances		Fair Value		Unrealized Losses		No. of Issuances
	(Dollars in thousands)
Securities Held-to-Maturity
Corporate debt securities	$	9,635	$	337		1	$	-	$	-		-	$	9,635	$	337		1
Total securities held-to-maturity	$	9,635	$	337		1	$	-	$	-		-	$	9,635	$	337		1
Securities Available-for-Sale
U.S. government sponsored entities	$	49,993	$	7		1	$	-	$	-		-	$	49,993	$	7		1
Mortgage-backed securities		564		4		8		35		1		2		599		5		10
Mortgage-backed securities-Non-agency		-		-		-		6,719		431		2		6,719		431		2
Collateralized mortgage obligations		-		-		-		570		238		4		570		238		4
Asset-backed securities		-		-		-		166		6		1		166		6		1
Corporate debt securities		185,577		14,201		17		172,857		17,528		19		358,434		31,729		36
Mutual funds		1,987		13		1		-		-		-		1,987		13		1
Trust preferred securities		5,674		24		2		-		-		-		5,674		24		2
Total securities available-for-sale	$	243,795	$	14,249		29	$	180,347	$	18,204		28	$	424,142	$	32,453		57
Total investment securities	$	253,430	$	14,586		30	$	180,347	$	18,204		28	$	433,777	$	32,790		58