Financial Instruments - Available For Sale Securities (Tables)

6 Months Ended

Jun. 30, 2013

Financial Instruments - Available For Sale Securities [Abstract]

Amortized Cost, Gross Unrealized Gains And Losses And Estimated Fair Value Of Available For Sale Investments

				Gross		Gross		Estimated
		Amortized		Unrealized		Unrealized		Fair
		Cost		Gains		Losses		Value
2013
Bonds and notes:
U.S. Government and federal agency securities	$	1,453,073	$	147	$	1	$	1,453,219
Residential mortgage-backed securities		626,050		13,890		2,241		637,699
Commercial mortgage-backed securities		76,064		824		453		76,435
Other asset-backed securities		122,922		16		1,539		121,399
All other corporates		39,578		85		176		39,487
Total fixed maturities		2,317,687		14,962		4,410		2,328,239
Equity securities:
Common stocks:
First Quantum Minerals Ltd. ("First Quantum")		295,259		–		61,109		234,150
Banks, trusts and insurance companies		30,317		26,633		–		56,950
Industrial, miscellaneous and all other		17,847		26,818		–		44,665
Total equity securities		343,423		53,451		61,109		335,765
Other investments		97		–		–		97
	$	2,661,207	$	68,413	$	65,519	$	2,664,101
2012
Bonds and notes:
U.S. Government and federal agency securities	$	1,663,225	$	327	$	40	$	1,663,512
Residential mortgage-backed securities		585,772		16,506		822		601,456
Commercial mortgage-backed securities		58,683		583		153		59,113
Other asset-backed securities		80,866		78		388		80,556
All other corporates		16,377		275		4		16,648
Total fixed maturities		2,404,923		17,769		1,407		2,421,285
Equity securities:
Common stocks:
Inmet Mining Corporation ("Inmet")		504,006		319,751		–		823,757
Banks, trusts and insurance companies		32,811		33,129		331		65,609
Industrial, miscellaneous and all other		23,195		22,562		300		45,457
Total equity securities		560,012		375,442		631		934,823
Other investments		1,054		–		170		884
	$	2,965,989	$	393,211	$	2,208	$	3,356,992

Amortized Cost And Estimated Fair Value Of Investments Classified As Available For Sale By Contractual Maturity

		Amortized		Estimated
		Cost		Fair Value
		(In thousands)
Due within one year	$	1,471,373	$	1,471,534
Due after one year through five years		21,278		21,172
Due after five years through ten years		–		–
Due after ten years		–		–
		1,492,651		1,492,706
Mortgage-backed and asset-backed securities		825,036		835,533
	$	2,317,687	$	2,328,239