Fair Value Measurements and Derivative Instruments (Tables)

12 Months Ended

Nov. 30, 2012

Fair value hierarchy of our cash equivalents, short-term investments and foreign currency contracts at fair value (in thousands):



			Fair Value Measurements at Reporting Date using
Description	Total Fair Value		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant other Observable Inputs (Level 2)
As of November 30, 2012
Assets:
Money market fund	$	376,480	$	376,480	$	—
Corporate bonds and commercial paper	24,558		—		24,558
U.S. government and agency debt securities	9,645		—		9,645
Term deposits	595		—		595
Mortgage-backed securities	208		—		208
Foreign currency forward contracts	101		—		101
Liabilities:
Foreign currency forward contracts	$	130	$	—	$	130
As of November 30, 2011
Assets:
Money market fund	$	16,664	$	16,664	$	—
Term deposits	560		—		560
Mortgage-backed securities	225		—		225
Foreign currency forward contracts	142		—		142
Liabilities:
Foreign currency forward contracts	$	142	$	—	$	142

As of November 30, 2012, we had the following forward contracts outstanding (in thousands):



	Notional Value Local Currency	Notional Value USD		Fair Value Gain (Loss) USD
Forward contracts sold:
Australian dollar	9,000	$	9,357	$	(1	)
Brazilian real	2,500	1,170		56
British pound	2,700	4,326		1
Canadian dollar	4,980	5,004		5
Euro	33,500	43,560		5
Indian rupee	64,000	1,177		6
Japanese yen	345,000	4,188		(5		)
Singapore dollar	1,400	1,147		—
New Taiwan dollar	31,000	1,066		(5		)
Forward contracts bought:
British pound	12,400	19,867		(118		)
Canadian dollar	480	483		4
Hong Kong dollar	6,900	890		—
				$	(52	)



	Notional Value Local Currency	Notional Value Euro		Fair Value Gain (Loss) USD
Forward contracts sold:
Canadian dollar	1,200	€	928	$	1
Forward contracts bought:
British pound	6,000	7,394		5
Swedish krona	31,500	3,636		5
United States dollar	48,300	37,145		12
				$	23



	Derivatives not Designated as Hedging Instruments
	2012		2011
Foreign currency forward contracts, fair value included in:
Other Current Assets	$	101	$	142
Accrued Liabilities	130		142



		Amount of Gain or (Loss) Recognized In Income on Derivative Year Ended November 30,
Derivatives not Designated as Hedging Instruments	Location	2012		2011
Foreign Currency Contracts	Other income/(expense)	$	2,961	$	8,426