Note 4 - Fair Value of Financial Instruments (Tables)

6 Months Ended

Jun. 30, 2016

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

The following is a list of assets that are measured at fair value by hierarchy level as of June 30, 2016:



(In thousands)	Level I		Level II		Level III		Total
Assets at Fair Value
Investment Portfolio:
U.S. government and agency securities	$	256,943	$	7,400	$	—	$	264,343
State and municipal obligations	—		378,094		—		378,094
Money market instruments	601,101		—		—		601,101
Corporate bonds and notes	—		1,885,964		—		1,885,964
RMBS	—		390,219		—		390,219
CMBS	—		611,524		—		611,524
Other ABS	—		442,636		—		442,636
Foreign government and agency securities	—		43,499		—		43,499
Equity securities	—		—		500		500
Other investments (1)	—		17,018		500		17,518
Total Investments at Fair Value (2)	858,044		3,776,354		1,000		4,635,398
Total Assets at Fair Value	$	858,044	$	3,776,354	$	1,000	$	4,635,398

______________________


(1)	Comprising short-term certificates of deposit and commercial paper, included within Level II, and private convertible notes, included within Level III.


(2)	Does not include certain other invested assets ($1.5 million), primarily invested in limited partnerships, accounted for as cost-method investments and not measured at fair value.

The following is a list of assets that are measured at fair value by hierarchy level as of December 31, 2015:



(In thousands)	Level I		Level II		Level III		Total
Assets at Fair Value
Investment Portfolio:
U.S. government and agency securities	$	670,328	$	8,000	$	—	$	678,328
State and municipal obligations	—		341,845		—		341,845
Money market instruments	443,272		—		—		443,272
Corporate bonds and notes	—		1,383,186		—		1,383,186
RMBS	—		297,097		—		297,097
CMBS	—		544,588		—		544,588
Other ABS	—		371,625		—		371,625
Foreign government and agency securities	—		37,576		—		37,576
Equity securities	74,930		25,016		500		100,446
Other investments (1)	—		99,009		—		99,009
Total Investments at Fair Value (2)	1,188,530		3,107,942		500		4,296,972
Total Assets at Fair Value	$	1,188,530	$	3,107,942	$	500	$	4,296,972

______________________


(1)	Comprising short-term certificates of deposit and commercial paper.


(2)	Does not include certain other invested assets ($1.7 million), primarily invested in limited partnerships, accounted for as cost-method investments and not measured at fair value.

Fair Value, by Balance Sheet Grouping [Table Text Block]

The carrying value and estimated fair value of other selected assets and liabilities not carried at fair value on our condensed consolidated balance sheets were as follows as of the dates indicated:



	June 30, 2016				December 31, 2015
(In thousands)	Carrying Amount		Estimated Fair Value		Carrying Amount		Estimated Fair Value
Assets:
Other invested assets	$	1,516	$	4,864	$	1,714	$	4,901
Liabilities:
Long-term debt	1,278,051		1,371,141		1,219,454		1,414,875