Investment Securities (Tables)

6 Months Ended

Nov. 28, 2020

Investments, Debt and Equity Securities [Abstract]

Schedule Of Investment Securities

The following represents the Company’s investment securities as of November 28, 2020 and May 30, 2020 (in thousands):

November 28, 2020	Amortized Cost		Unrealized Gains		Unrealized Losses		Estimated Fair Value
Municipal bonds	$	16,378	$	84	$	—	$	16,462
Commercial paper	3,743		—		7		3,736
Corporate bonds	98,355		1,387		—		99,742
Certificates of deposits	1,001		1		—		1,002
Asset backed securities	3,656		23		—		3,679
Total current investment securities	$	123,133	$	1,495	$	7	$	124,621
Mutual funds	$	2,032	$	1,281	$	—	$	3,313
Total noncurrent investment securities	$	2,032	$	1,281	$	—	$	3,313

May 30, 2020	Amortized Cost		Unrealized Gains		Unrealized Losses		Estimated Fair Value
Municipal bonds	$	16,093	$	86	$	—	$	16,179
Commercial paper	6,965		17		—		6,982
Corporate bonds	125,594		1,274		—		126,868
Certificates of deposits	1,492		—		—		1,492
Asset backed securities	2,629		13		—		2,642
Total current investment securities	$	152,773	$	1,390	$	—	$	154,163
Mutual funds	$	2,005	$	744	$	—	$	2,749
Total noncurrent investment securities	$	2,005	$	744	$	—	$	2,749

Schedule Of Contractual Maturities Of Investment Securities

Contractual maturities of current investments at November 28, 2020 are as follows (in thousands):

	Estimated Fair Value
Within one year	$	53,445
1-5 years	71,176
Total	$	124,621