Marketable Securities

12 Months Ended

Jan. 31, 2022

Investments, Debt and Equity Securities [Abstract]


4			Marketable Securities

The following is a summary of our marketable securities (in thousands):


	As of January 31, 2022
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
Commercial paper	$	15,343	$	—	$	—	$	15,343
Corporate bonds	91,735		—		(303)		91,432
Municipal bonds	9,197		—		(32)		9,165
Total marketable securities	$	116,275	$	—	$	(335)	$	115,940


	As of January 31, 2021
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
Commercial paper	$	23,171	$	—	$	—	$	23,171
Corporate bonds	79,674		7		(24)		79,657
Total marketable securities	$	102,845	$	7	$	(24)	$	102,828

As of January 31, 2022, $19.5 million of our marketable securities had remaining contractual maturities of one year or more, and the remainder had contractual maturities of less than one year. As of January 31, 2021, the contractual maturities of our marketable securities were all less than one year. Based on the available evidence, we concluded that the gross unrealized losses on the marketable securities as of January 31, 2022 and 2021 are temporary in nature. To determine whether a decline in value is other-than temporary, we evaluate, among other factors, the duration and extent to which the fair value has been less than the carrying value and our intent and

ability to retain the marketable securities for a period of time sufficient to allow for any anticipated recovery in fair value.