Note 3 - Securities (Tables)

6 Months Ended

18 Months Ended

Jun. 30, 2012

Jun. 30, 2012

Securities Portfolio [Table Text Block]

	June 30, 2012												December 31, 2011
	Amortized		Gross Unrealized							Fair			Amortized			Gross Unrealized							Fair
	Cost		Gains			Losses				Value			Cost			Gains			Losses				Value
Securities Available-for-Sale
U.S. agency securities	$	2,011		$	-		$	(5	)		$	2,006		$	5,060		$	-		$	(25	)		$	5,035
Collateralized residential mortgage obligations(“CMOs”)		486,449			3,912			(1,314	)			489,047			383,828			2,622			(2,346	)			384,104
Other residential mortgage-backed securities (“MBSs”)		130,032			5,927			(32	)			135,927			81,982			5,732			(23	)			87,691
Municipal securities		478,970			25,944			(221	)			504,693			464,282			26,155			(366	)			490,071
Collateralized debt obligations (“CDOs”)		46,633			-			(35,551	)			11,082			48,759			-			(35,365	)			13,394
Corporate debt securities		19,693			2,008			-				21,701			27,511			2,514			(11	)			30,014
Equity securities:
Hedge fund investment		1,230			803			-				2,033			1,231			385			-				1,616
Other equity securities		8,236			206			-				8,442			958			123			-				1,081
Total equity securities		9,466			1,009			-				10,475			2,189			508			-				2,697
Total	$	1,173,254		$	38,800		$	(37,123	)		$	1,174,931		$	1,013,611		$	37,531		$	(38,136	)		$	1,013,006
Securities Held-to-Maturity
Municipal securities	$	60,933		$	4,714		$	-			$	65,647		$	60,458		$	1,019		$	-			$	61,477
Trading Securities (1)											$	15,314												$	14,469

Investments Classified by Contractual Maturity Date [Table Text Block]

	June 30, 2012
	Available-for-Sale				Held-to-Maturity
	Amortized Cost		Fair Value		Amortized Cost		Fair Value
One year or less	$	12,990	$	12,804	$	7,558	$	8,143
One year to five years		346,564		341,609		13,043		14,052
Five years to ten years		108,062		106,517		19,036		20,509
After ten years		79,691		78,552		21,296		22,943
CMOs		486,449		489,047		-		-
Other residential MBSs		130,032		135,927		-		-
Equity securities		9,466		10,475		-		-
Total	$	1,173,254	$	1,174,931	$	60,933	$	65,647

Realized Gain (Loss) on Investments [Table Text Block]

	Quarters Ended June 30,						Six Months Ended June 30,
	2012			2011			2012			2011
Proceeds from sales	$	9,397		$	53,118		$	12,059		$	97,330
Gains (losses) on sales of securities:
Gross realized gains	$	1,556		$	1,974		$	1,603		$	2,782
Gross realized losses		-			(443	)		(253	)		(711	)
Net realized gains (losses) on securities sales		1,556			1,531			1,350			2,071
Non-cash impairment charges:
Other-than-temporary securities impairment (“OTTI”)		(1,591	)		-			(2,328	)		-
Portion of other-than-temporary impairment recognized in other comprehensive income		186			-			186			-
Net non-cash impairment charges		(1,405	)		-			(2,142	)		-
Net realized gains (losses)	$	151		$	1,531		$	(792	)	$	2,071
Income tax expense (benefit) on net realized gains (losses)	$	62		$	626		$	(324	)	$	847
Net trading (losses) gains (1)	$	(575	)	$	(2	)	$	826		$	742

Credit Related CDO Impairment Losses [Table Text Block]

		Quarters Ended June 30,				Six Months Ended June 30,
CDO Number		2012		2011		2012		2011		Life-to-Date
	1	$	-	$	-	$	-	$	-	$	10,360
	2		893		-		1,535		-		9,403
	3		512		-		591		-		2,161
	4		-		-		-		-		1,078
	5		-		-		-		-		8,570
	6		-		-		-		-		243
	7		-		-		-		-		6,750
		$	1,405	$	-	$	2,126	$	-	$	38,565

Other than Temporary Impairment, Credit Losses Recognized in Earnings [Table Text Block]

	Quarters Ended June 30,				Six Months Ended June 30,
	2012		2011		2012		2011
Cumulative amount recognized at beginning of period	$	37,262	$	35,589	$	36,525	$	35,589
Credit losses included in earnings (1):
Losses recognized on securities that previously had credit losses		1,405		-		2,142		-
Losses recognized on securities that did not previously have credit losses		-		-		-		-
Cumulative amount recognized at end of period	$	38,667	$	35,589	$	38,667	$	35,589

Unrealized Gain (Loss) on Investments [Table Text Block]

			Less Than 12 Months				12 Months or Longer				Total
	Number of Securities		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
As of June 30, 2012
U.S. agency securities		1	$	2,006	$	5	$	-	$	-	$	2,006	$	5
CMOs		36		159,149		887		14,875		427		174,024		1,314
Other residential mortgage-backed securities		4		8,630		16		262		16		8,892		32
Municipal securities		36		22,975		191		3,365		30		26,340		221
CDOs		6		-		-		11,082		35,551		11,082		35,551
Total		83	$	192,760	$	1,099	$	29,584	$	36,024	$	222,344	$	37,123
As of December 31, 2011
U.S. agency securities		2	$	-	$	-	$	5,035	$	25	$	5,035	$	25
CMOs		30		163,819		1,818		12,628		528		176,447		2,346
Other residential mortgage-backed securities		4		182		17		1,072		6		1,254		23
Municipal securities		19		934		2		7,857		364		8,791		366
CDOs		6		-		-		13,394		35,365		13,394		35,365
Corporate debt securities		1		2,157		11		-		-		2,157		11
Total		62	$	167,092	$	1,848	$	39,986	$	36,288	$	207,078	$	38,136