FAIR VALUE OF CERTAIN FINANCIAL ASSETS AND LIABILITIES (Tables)

9 Months Ended

Sep. 30, 2017

September 30, 2017	Level 1		Level 2			Level 3		Total
Cash	$	330,758	$	-		$	-	$	330,758
Money market funds	69,273		-			-		69,273
Certificates of deposit	-		56,698			-		56,698
Commercial paper	-		81,708			-		81,708
Variable rate demand notes	-		46,054			-		46,054
Municipal securities	-		423,159			-		423,159
U.S. government agency securities	-		83,279			-		83,279
U.S. Treasuries	-		11,981			-		11,981
Foreign currency derivatives	-		(339		)	-		(339		)

Total	$	400,031	$	702,540		$	-	$	1,102,571


Amounts included in:
Cash and cash equivalents	$	400,031	$	65,528		$	-	$	465,559
Short-term investments	-		630,348			-		630,348
Accounts receivable, net	-		174			-		174
Investments	-		7,003			-		7,003
Accrued liabilities	-		(513		)	-		(513		)

Total	$	400,031	$	702,540		$	-	$	1,102,571


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