Cash and Marketable Securities (Tables)

6 Months Ended

Nov. 30, 2021

Marketable Securities as of November 30, 2021 and May 31, 2021 are listed below by classification and remaining maturities.


		November 30,		May 31,
(in thousands)	Maturity	2021		2021
Commercial Paper & Corporate Bonds	0 - 90 days		79,830		106,631
	91 - 180 days		88,246		78,727
	181 days - 1 year		64,526		87,590
	1 - 2 years		104,275		26,752
Certificates of Deposit	0 - 90 days		1,002		3,262
	91 - 180 days		251		1,260
	181 days - 1 year		—		1,263
	1 - 2 years		—		—

Total Marketable Securities		$	338,130	$	305,485

The components of marketable securities at November 30, 2021 are as follows:


	Amortized		Unrealized		Unrealized
(in thousands)	Cost		Gains		Losses			Fair Value
Commercial Paper & Corporate Bonds		337,437		18		(578	)		336,877
Certificates of Deposit		1,251		2		—			1,253

Total Marketable Securities	$	338,688	$	20	$	(578	)	$	338,130

The components of marketable securities at May 31, 2021 are as follows:


	Amortized		Unrealized		Unrealized
(in thousands)	Cost		Gains		Losses			Fair Value
Commercial Paper & Corporate Bonds		299,524		209		(33	)		299,700
Certificates of Deposit		5,755		30		—			5,785

Total Marketable Securities	$	305,279	$	239	$	(33	)	$	305,485