INVESTMENTS (TABLES)

6 Months Ended

Jun. 30, 2011

Notes To Consolidated Financial Statement Abstract

Schedule Of Available For Sale Securities Reconciliation Table Text Block

	June 30, 2011
							Other-Than-
			Gross		Gross		Temporary
			Unrealized		Unrealized		Impairment		Fair
	Cost		Gains		Losses		Losses		Value
Corporate notes and bonds	$	360,758	$	474	$	(128)	$	-	$	361,104
Federal agency notes and bonds		251,136		769		(8)		-		251,897
Auction rate floating securities		26,575		-		(6,691)		-		19,884
Asset-backed securities		45,011		38		-		-		45,049
Total securities	$	683,480	$	1,281	$	(6,827)	$	-	$	677,934

Investments Classified By Contractual Maturity Date Table Text Block

	June 30, 2011
			Estimated
	Cost		Fair Value
Available-for-sale
Due in one year or less	$	327,303	$	327,965
Due after one year through five years		329,602		330,085
Due after 10 years		26,575		19,884
	$	683,480	$	677,934

Schedule Of Unrealized Loss On Investments Table Text Block

	Less Than 12 Months				Greater Than 12 Months
			Gross				Gross
	Fair		Unrealized		Fair		Unrealized
	Value		Loss		Value		Loss
Corporate notes and bonds	$	79,304	$	128	$	-	$	-
Federal agency notes and bonds		18,892		8		-		-
Auction rate floating securities		-		-		19,884		6,691
Asset-backed securities		1,790		-		-		-
Total securities	$	99,986	$	136	$	19,884	$	6,691