SHORT-TERM AND LONG-TERM INVESTMENTS (Tables)

6 Months Ended

Apr. 30, 2022

Investments, Debt and Equity Securities [Abstract]

Schedule of Short-Term and Long-Term Investments

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

	April 30, 2022
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
U.S. government obligations:
Included in short-term investments	$	530,051	$	1	$	(500)	$	529,552
Included in long-term investments	89,593		—		(2,451)		87,142
	$	619,644	$	1	$	(2,951)	$	616,694

	October 30, 2021
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
U.S. government obligations:
Included in short-term investments	$	181,488	$	5	$	(10)	$	181,483
Included in long-term investments	70,225		—		(187)		70,038
	$	251,713	$	5	$	(197)	$	251,521

Schedule of Legal Maturities of Debt Investments

The following table summarizes the final legal maturities of debt investments as of April 30, 2022 (in thousands):

	Amortized Cost		Estimated Fair Value
Less than one year	$	530,051	$	529,552
Due in 1-2 years	89,593		87,142
	$	619,644	$	616,694