Note 11 - Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2016

Notes Tables

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

September 30, 2016	Fair Value Measurements Using						Total at
	Level 1		Level 2		Level 3		Fair Value
	(In thousands)
Assets
Securities available-for-sale
U.S. Treasury securities	$	390,009	$	-	$	-	$	390,009
U.S. government sponsored entities		-		250,010		-		250,010
Mortgage-backed securities		-		563,638		-		563,638
Collateralized mortgage obligations		-		30		-		30
Corporate debt securities		-		74,469		-		74,469
Mutual funds		5,926		-		-		5,926
Preferred stock of government sponsored entities		-		3,188		-		3,188
Other equity securities		-		11,199		-		11,199
Total securities available-for-sale		395,935		902,534		-		1,298,469
Warrants		-		-		75		75
Foreign exchange contracts		-		1,711		-		1,711
Total assets	$	395,935	$	904,245	$	75	$	1,300,255
Liabilities
Interest rate swaps	$	-	$	15,186	$	-	$	15,186
Foreign exchange contracts		-		712		-		712
Total liabilities	$	-	$	15,898	$	-	$	15,898

December 31, 2015	Fair Value Measurements Using						Total at
	Level 1		Level 2		Level 3		Fair Value
	(In thousands)
Assets
Securities available-for-sale
U.S. Treasury securities	$	284,288	$	-	$	-	$	284,288
U.S. government sponsored entities		-		148,160		-		148,160
Mortgage-backed securities		-		1,062,269		-		1,062,269
Collateralized mortgage obligations		-		36		-		36
Corporate debt securities		-		73,855		-		73,855
Mutual funds		5,833		-		-		5,833
Preferred stock of government sponsored entities		-		3,216		-		3,216
Other equity securities		-		8,695		-		8,695
Total securities available-for-sale		290,121		1,296,231		-		1,586,352
Warrants		-		-		62		62
Foreign exchange contracts		-		3,339		-		3,339
Total assets	$	290,121	$	1,299,570	$	62	$	1,589,753
Liabilities
Option contracts	$	-	$	28	$	-	$	28
Interest rate swaps		-		6,496		-		6,496
Foreign exchange contracts		-		4,124		-		4,124
Total liabilities	$	-	$	10,648	$	-	$	10,648

Fair Value Measurements, Nonrecurring [Table Text Block]

	September 30, 2016								Total (Gains)/Losses
	Fair Value Measurements Using								Three Months Ended					Nine Months Ended
	Level 1		Level 2		Level 3		Total at Fair Value		September 30, 2016			September 30, 2015		September 30, 2016		September 30, 2015
	(In thousands)
Assets
Impaired loans by type:
Commercial loans	$	-	$	-	$	1,897	$	1,897	$	-		$	575	$	-	$	3,380
Commercial mortgage loans		-		-		9,041		9,041		-			-		-		654
Residential mortgage loans and equity lines		-		-		13,139		13,139		-			-		-		146
Total impaired loans		-		-		24,077		24,077		-			575		-		4,180
Other real estate owned (1)		-		3,095		4,372		7,467		(206	)		179		9		404
Investments in venture capital and private company stock		-		-		4,291		4,291		187			81		419		408
Total assets	$	-	$	3,095	$	32,740	$	35,835	$	(19	)	$	835	$	428	$	4,992

	December 31, 2015								Total Losses
	Fair Value Measurements Using								Twelve Months Ended
	Level 1		Level 2		Level 3		Total at Fair Value		December 31, 2015		December 31, 2014
	(In thousands)
Assets
Impaired loans by type:
Commercial loans	$	-	$	-	$	6,317	$	6,317	$	806	$	17
Commercial mortgage loans		-		-		20,359		20,359		598		3,914
Residential mortgage loans and equity lines		-		-		13,009		13,009		146		27
Total impaired loans		-		-		39,685		39,685		1,550		3,958
Other real estate owned (1)		-		10,047		4,235		14,282		404		202
Investments in venture capital and private company stock		-		-		4,922		4,922		553		436
Total assets	$	-	$	10,047	$	48,842	$	58,889	$	2,507	$	4,596