Note 12 - Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2018

Notes Tables

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

March 31, 2018	Fair Value Measurements Using						Total at
	Level 1		Level 2		Level 3		Fair Value
	(In thousands)
Assets
Debt securities available-for-sale
U.S. Treasury securities	$	124,595	$	-	$	-	$	124,595
U.S. government agencies		-		8,695		-		8,695
U.S. government sponsored entities		-		385,920		-		385,920
State and municipal securities		-		904		-		904
Mortgage-backed securities		-		638,359		-		638,359
Collateralized mortgage obligations		-		1,371		-		1,371
Corporate debt securities		-		81,261		-		81,261
Total debt securities available-for-sale		124,595		1,116,510		-		1,241,105
Equity securities
Preferred stock of government sponsored entities		6,691		-		-		6,691
Mutual funds		6,129		-		-		6,129
Other equity securities		11,334		-		-		11,334
Total equity securities		24,154		-		-		24,154
Warrants		-		-		195		195
Foreign exchange contracts		-		1,539		-		1,539
Interest rate swaps		-		11,674		-		11,674
Total assets	$	148,749	$	1,129,723	$	195	$	1,278,667
Liabilities
Option contracts	$	-	$	3	$	-	$	3
Foreign exchange contracts		-		924		-		924
Total liabilities	$	-	$	927	$	-	$	927

December 31, 2017	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	$	249,520	$	-	$	-	$	249,520
U.S. government agency entities		-		8,988		-		8,988
U.S. government sponsored entities		-		390,336		-		390,336
State and municipal securities		-		1,914		-		1,914
Mortgage-backed securities		-		571,969		-		571,969
Collateralized mortgage obligations		-		1,516		-		1,516
Corporate debt securities		-		81,281		-		81,281
Mutual funds		6,230		-		-		6,230
Preferred stock of government sponsored entities		10,102		-		-		10,102
Other equity securities		11,770		-		-		11,770
Total securities available-for-sale		277,622		1,056,004		-		1,333,626
Warrants		-		-		91		91
Interest rate swaps		-		5,218		-		5,218
Foreign exchange contracts		-		1,832		-		1,832
Total assets	$	277,622	$	1,063,054	$	91	$	1,340,767
Liabilities
Option contracts	$	-	$	9	$	-	$	9
Interest rate swaps		-		2,699		-		2,699
Foreign exchange contracts		-		453		-		453
Total liabilities	$	-	$	3,161	$	-	$	3,161

Fair Value Measurements, Nonrecurring [Table Text Block]

	As of March 31, 2018								Total Losses
	Fair Value Measurements Using						Total at		For the Three Months Ended
	Level 1		Level 2		Level 3		Fair Value		March 31, 2018		March 31, 2017
	(In thousands)
Assets
Impaired loans by type:
Commercial loans	$	-	$	-	$	220	$	220	$	-	$	20
Commercial mortgage loans		-		-		26,131		26,131		-		250
Residential mortgage loans and equity lines		-		-		7,619		7,619		-		-
Total impaired loans		-		-		33,970		33,970		-		270
Other real estate owned (1)		-		5,478		4,343		9,821		33		37
Investments in venture capital and private company stock		-		-		2,430		2,430		173		187
Total assets	$	-	$	5,478	$	40,743	$	46,221	$	206	$	494

	As of December 31, 2017								Total Losses
	Fair Value Measurements Using						Total at		For the Twelve Months Ended
	Level 1		Level 2		Level 3		Fair Value		December 31, 2017		December 31, 2016
	(In thousands)
Assets
Impaired loans by type:
Commercial loans	$	-	$	-	$	18,097	$	18,097	$	25	$	322
Commercial mortgage loans		-		-		31,459		31,459		-		-
Residential mortgage loans and equity lines		-		-		11,355		11,355		-		-
Total impaired loans		-		-		60,911		60,911		25		322
Other real estate owned (1)		-		5,677		4,322		9,999		457		9
Investments in venture capital and private company stock		-		-		2,583		2,583		392		976
Total assets	$	-	$	5,677	$	67,816	$	73,493	$	874	$	1,307