Short-Term and Long-Term Investments

3 Months Ended

Jan. 31, 2019

Investments, Debt and Equity Securities [Abstract]

Short-Term and Long-Term Investments

SHORT-TERM AND LONG-TERM INVESTMENTS

As of the dates indicated, investments are comprised of the following (in thousands):

	January 31, 2019
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
U.S. government obligations:
Included in short-term investments	$	119,245	$	—	(102		)	$	119,143
	$	119,245	$	—	$	(102	)	$	119,143

	October 31, 2018
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
U.S. government obligations:
Included in short-term investments	$	139,365	$	—	$	(347	)	$	139,018
Included in long-term investments	59,029		—		(59		)	58,970
	$	198,394	$	—	$	(406	)	$	197,988
Commercial paper:
Included in short-term investments	$	9,963	—		—			$	9,963
	$	9,963	$	—	$	—		$	9,963

The following table summarizes the final legal maturities of debt investments at January 31, 2019 (in thousands):

	Amortized Cost		Estimated Fair Value
Less than one year	$	119,245	$	119,143