FAIR VALUE OF CERTAIN FINANCIAL ASSETS AND LIABILITIES (Tables)

12 Months Ended

Dec. 31, 2016

FAIR VALUE OF CERTAIN FINANCIAL ASSETS AND LIABILITIES

Schedule of financial assets recorded at fair value on a recurring basis

December 31, 2016	Level 1		Level 2			Level 3		Total
Cash	$	278,972	$	-		$	-	$	278,972
Money market funds	76,112		-			-		76,112
Commercial paper	-		47,855			-		47,855
Variable rate demand notes	-		13,923			-		13,923
Municipal securities	-		157,617			-		157,617
U.S. government agency securities	-		26,051			-		26,051
Foreign currency derivatives	-		(528		)	-		(528		)
Total	$	355,084	$	244,918		$	-	$	600,002
Amounts included in:
Cash and cash equivalents	$	355,084	$	22,498		$	-	$	377,582
Short-term investments	-		220,554			-		220,554
Accounts receivable, net	-		236			-		236
Investments	-		2,394			-		2,394
Accrued liabilities	-		(764		)	-		(764		)
Total	$	355,084	$	244,918		$	-	$	600,002
December 31, 2015	Level 1		Level 2			Level 3		Total
Cash	$	255,723	$	-		$	-	$	255,723
Money market funds	664,005		-			-		664,005
Certificates of deposit	-		85,007			-		85,007
Commercial paper	-		430,605			-		430,605
U.S. Treasuries	-		260,035			-		260,035
Municipal securities	-		731,744			-		731,744
U.S. government agency securities	-		508,256			-		508,256
Foreign currency derivatives	-		(217		)	-		(217		)
Total	$	919,728	$	2,015,430		$	-	$	2,935,158
Amounts included in:
Cash and cash equivalents	$	919,728	$	1,255,689		$	-	$	2,175,417
Short-term investments	-		744,610			-		744,610
Accounts receivable, net	-		371			-		371
Investments	-		15,348			-		15,348
Accrued liabilities	-		(588		)	-		(588		)
Total	$	919,728	$	2,015,430		$	-	$	2,935,158