Note 11 - Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2014

Disclosure Text Block [Abstract]

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]

March 31, 2014	Fair Value Measurements Using						Total at
	Level 1		Level 2		Level 3		Fair Value
Assets	(In thousands)
Securities available-for-sale
U.S. Treasury securities	$	475,259	$	-	$	-	$	475,259
Mortgage-backed securities		-		921,153		-		921,153
Collateralized mortgage obligations		-		43		-		43
Corporate debt securities		-		162,681		-		162,681
Mutual funds		5,757		-		-		5,757
Preferred stock of government sponsored entities		-		13,444		-		13,444
Other equity securities		560		-		-		560
Total securities available-for-sale		481,576		1,097,321		-		1,578,897
Warrants		-		-		28		28
Option contracts		-		3		-		3
Foreign exchange contracts		-		5,093		-		5,093
Total assets	$	481,576	$	1,102,417	$	28	$	1,584,021
Liabilities
Option contracts	$	-	$	2	$	-	$	2
Foreign exchange contracts		-		3,322		-		3,322
Total liabilities	$	-	$	3,324	$	-	$	3,324

December 31, 2013	Fair Value Measurements Using						Total at
	Level 1		Level 2		Level 3		Fair Value
Assets	(In thousands)
Securities available-for-sale
U.S. Treasury securities	$	460,193	$	-	$	-	$	460,193
Mortgage-backed securities		-		952,815		-		952,815
Collateralized mortgage obligations		-		6,106		-		6,106
Asset-backed securities		-		123		-		123
Corporate debt securities		-		150,304		-		150,304
Mutual funds		5,724		-		-		5,724
Preferred stock of government sponsored entities		-		11,403		-		11,403
Total securities available-for-sale		465,917		1,120,751		-		1,586,668
Trading securities		-		4,936		-		4,936
Warrants		-		-		30		30
Foreign exchange contracts		-		6,182		-		6,182
Total assets	$	465,917	$	1,131,869	$	30	$	1,597,816
Liabilities
Foreign exchange contracts	$	-	$	6,140	$	-	$	6,140
Total liabilities	$	-	$	6,140	$	-	$	6,140

Fair Value Measurements, Nonrecurring [Table Text Block]

	March 31, 2014								Total Losses / (Gains)
	Fair Value Measurements Using						Total at		Three months ended
	Level 1		Level 2		Level 3		Fair Value		March 31, 2014		March 31, 2013
Assets	(In thousands)
Impaired loans by type:
Commercial loans	$	-	$	-	$	13,436	$	13,436	$	-	$	463
Commercial mortgage loans		-		-		28,784		28,784		-		41
Construction- residential		-		-		500		500		-		-
Construction- other		-		-		15,376		15,376		-		-
Residential mortgage loans and equity lines		-		-		13,113		13,113		-		189
Land loans		-		-		30		30		-		48
Total impaired loans		-		-		71,239		71,239		-		741
Other real estate owned (1)		-		18,261		14,337		32,598		183		(66	)
Investments in venture capital		-		-		5,827		5,827		111		92
Equity investments		177		-		-		177		-		-
Total assets	$	177	$	18,261	$	91,403	$	109,841	$	294	$	767

	December 31, 2013								Total Losses / (Gains)
	Fair Value Measurements Using						Total at		Twelve months ended
	Level 1		Level 2		Level 3		Fair Value		December 31, 2013			December 31, 2012
Assets	(In thousands)
Impaired loans by type:
Commercial loans	$	-	$	-	$	7,584	$	7,584	$	5,731		$	-
Commercial mortgage loans		-		-		29,001		29,001		125			440
Construction- residential		-		-		500		500		-			-
Construction- other		-		-		15,363		15,363		-			65
Residential mortgage loans and equity lines		-		-		14,236		14,236		213			605
Land loans		-		-		29		29		-			162
Total impaired loans		-		-		66,713		66,713		6,069			1,272
Other real estate owned (1)		-		13,248		26,498		39,746		(3,134	)		10,904
Investments in venture capital		-		-		8,900		8,900		409			309
Equity investments		642		-		-		642		-			181
Total assets	$	642	$	13,248	$	102,111	$	116,001	$	3,344		$	12,666