Note 11 - Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2015

Disclosure Text Block [Abstract]

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

March 31, 2015	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	$	350,183	$	-	$	-	$	350,183
Mortgage-backed securities		-		760,329		-		760,329
Collateralized mortgage obligations		-		42		-		42
Corporate debt securities		-		74,511		-		74,511
Mutual funds		5,921		-		-		5,921
Preferred stock of government sponsored entities		-		3,946		-		3,946
Other equity securities		-		8,750		-		8,750
Total securities available-for-sale		356,104		847,578		-		1,203,682
Warrants		-		-		21		21
Foreign exchange contracts		-		1,615		-		1,615
Total assets	$	356,104	$	849,193	$	21	$	1,205,318
Liabilities
Interest rate swaps	$	-	$	8,610	$	-	$	8,610
Foreign exchange contracts		-		4,959		-		4,959
Total liabilities	$	-	$	13,569	$	-	$	13,569

December 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	$	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]

	March 31, 2015								Total Losses
	Fair Value Measurements Using						Total at		Three Months Ended
	Level 1		Level 2		Level 3		Fair Value		March 31, 2015		March 31, 2014
	(In thousands)
Assets
Impaired loans by type:
Commercial loans	$	-	$	-	$	11,749	$	11,749	$	-	$	-
Commercial mortgage loans		-		-		19,947		19,947		56		-
Residential mortgage loans and equity lines		-		-		14,318		14,318		148		-
Total impaired loans		-		-		46,014		46,014		204		-
Other real estate owned (1		-		10,868		4,110		14,978		181		183
Investments in venture capital		-		-		5,371		5,371		224		111
Total assets	$	-	$	10,868	$	55,495	$	66,363	$	609	$	294

	December 31, 2014								Total Losses / (Gains)
	Fair Value Measurements Using						Total at		Twelve Months Ended
	Level 1		Level 2		Level 3		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	$	-	$	16,458	$	59,776	$	76,234	$	4,596	$	3,344