Short-term and Long-term Investments

3 Months Ended

Jan. 31, 2014

Investments, Debt and Equity Securities [Abstract]

SHORT-TERM AND LONG-TERM INVESTMENTS

SHORT-TERM AND LONG-TERM INVESTMENTS

As of the dates indicated, short-term and long-term investments are comprised of the following (in thousands):

	January 31, 2014
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
U.S. government obligations:
Included in short-term investments	$	59,993	$	9	—		$	60,002
Included in long-term investments	14,997		41		—		15,038
	$	74,990	$	50	$	—	$	75,040
Commercial paper:
Included in short-term investments	34,991		—		—		34,991
	$	34,991	$	—	$	—	$	34,991

	October 31, 2013
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
U.S. government obligations:
Included in short-term investments	$	99,974	$	11	$	—	$	99,985
Included in long-term investments	14,996		35		—		15,031
	$	114,970	$	46	$	—	$	115,016
Commercial paper:
Included in short-term investments	24,994		—		—		24,994
	$	24,994	$	—	$	—	$	24,994

The following table summarizes final legal maturities of debt investments at January 31, 2014 (in thousands):

	Amortized Cost		Estimated Fair Value
Less than one year	$	94,984	$	94,993
Due in 1-2 years	14,997		15,038
	$	109,981	$	110,031