Note 11 - Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2015

Disclosure Text Block [Abstract]

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

June 30, 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	$	300,110	$	-	$	-	$	300,110
U.S. government sponsored entities				50,127		-		50,127
Mortgage-backed securities		-		1,101,403		-		1,101,403
Collateralized mortgage obligations		-		40		-		40
Corporate debt securities		-		74,399		-		74,399
Mutual funds		5,844		-		-		5,844
Preferred stock of government sponsored entities		-		3,544		-		3,544
Other equity securities		-		10,232		-		10,232
Total securities available-for-sale		305,954		1,239,745		-		1,545,699
Warrants		-		-		32		32
Foreign exchange contracts		-		2,326		-		2,326
Total assets	$	305,954	$	1,242,071	$	32	$	1,548,057
Liabilities
Interest rate swaps	$	-	$	4,095	$	-	$	4,095
Foreign exchange contracts		-		3,201		-		3,201
Total liabilities	$	-	$	7,296	$	-	$	7,296

December 31, 2014	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	$	664,004	$	-	$	-	$	664,004
Mortgage-backed securities		-		544,303		-		544,303
Collateralized mortgage obligations		-		45		-		45
Corporate debt securities		-		94,472		-		94,472
Mutual funds		5,866		-		-		5,866
Preferred stock of government sponsored entities		-		3,224		-		3,224
Other equity securities		-		7,021		-		7,021
Total securities available-for-sale		669,870		649,065		-		1,318,935
Warrants		-		-		27		27
Foreign exchange contracts		-		1,876		-		1,876
Total assets	$	669,870	$	650,941	$	27	$	1,320,838
Liabilities
Interest rate swaps	$	-	$	4,626	$	-	$	4,626
Foreign exchange contracts		-		5,007		-		5,007
Total liabilities	$	-	$	9,633	$	-	$	9,633

Fair Value Measurements, Nonrecurring [Table Text Block]

	June 30, 2015								Total Losses
	Fair Value Measurements Using						Total at		Three Months Ended				Six Months Ended
	Level 1		Level 2		Level 3		Fair Value		June 30, 2015		June 30, 2014		June 30, 2015		June 30, 2014
	(In thousands)
Assets
Impaired loans by type:
Commercial loans	$	-	$	-	$	8,955	$	8,955	$	2,574	$	17	$	2,805	$	17
Commercial mortgage loans		-		-		20,268		20,268		-		-		654		-
Residential mortgage loans and equity lines		-		-		13,950		13,950		-		-		146		-
Total impaired loans		-		-		43,173		43,173		2,574		17		3,605		17
Other real estate owned (1)		-		8,017		4,236		12,253		44		142		225		325
Investments in venture capital		-		-		5,371		5,371		103		157		327		268
Total assets	$	-	$	8,017	$	52,780	$	60,797	$	2,721	$	316	$	4,157	$	610

	December 31, 2014								Total Losses / (Gains)
	Fair Value Measurements Using								Twelve Months Ended
	Level 1		Level 2		Level 3		Total at Fair Value		December 31, 2014		December 31, 2013
	(In thousands)
Assets
Impaired loans by type:
Commercial loans	$	-	$	-	$	3,774	$	3,774	$	17	$	5,731
Commercial mortgage loans		-		-		25,029		25,029		3,914		125
Construction- other		-		-		7,625		7,625		-		-
Residential mortgage loans and equity lines		-		-		13,126		13,126		27		213
Total impaired loans		-		-		49,554		49,554		3,958		6,069
Other real estate owned (1)		-		16,458		4,110		20,568		202		(3,134	)
Investments in venture capital		-		-		5,495		5,495		436		409
Equity investments		617		-		-		617		-		-
Total assets	$	617	$	16,458	$	59,159	$	76,234	$	4,596	$	3,344