Investment Securities (Tables)

9 Months Ended

Feb. 25, 2017

Investments, Debt and Equity Securities [Abstract]

Schedule Of Investment Securities

The following represents the Company’s investment securities as of February 25, 2017 and May 28, 2016 (in thousands):

February 25, 2017	Amortized Cost		Unrealized Gains		Unrealized Losses		Estimated Fair Value
US government and agency obligations	$	17,089	$	—	$	27	$	17,062
Municipal bonds	46,981		30		—		47,011
Corporate bonds	85,703		49		—		85,752
Foreign government obligations	2,009		—		1		2,008
Asset backed securities	5,837		—		—		5,837
Total current investment securities	$	157,619	$	79	$	28	$	157,670
Mutual funds	$	1,751	$	736	$	—	$	2,487
Total noncurrent investment securities	$	1,751	$	736	$	—	$	2,487

May 28, 2016	Amortized Cost		Unrealized Gains		Unrealized Losses		Estimated Fair Value
US government and agency obligations	$	18,809	$	5	$	—	$	18,814
Municipal bonds	79,481		162		—		79,643
Corporate bonds	240,593		—		56		240,537
Foreign government obligations	2,044		2		—		2,046
Asset backed securities	15,908		—		15		15,893
Mutual funds	3,565		1		—		3,566
Total current investment securities	$	360,400	$	170	$	71	$	360,499
Mutual funds	$	1,448	$	489	$	—	$	1,937
Total noncurrent investment securities	$	1,448	$	489	$	—	$	1,937

Schedule of Unrealized Holding Gain (Loss) on Investments

Unrealized holding gains and (losses), net of taxes, for the thirty-nine weeks endedFebruary 25, 2017 and February 27, 2016 were as follows (in thousands):

	39 Weeks Ended
	February 25, 2017			February 27, 2016
Current investments	$	(30	)	$	(740	)
Noncurrent investments	154			(94		)
Total unrealized holding gains (losses)	$	124		$	(834	)

Schedule Of Contractual Maturities Of Investment Securities

Contractual maturities at February 25, 2017, are as follows (in thousands):

	Estimated Fair Value
Within one year	$	84,966
1-5 years	72,704
Total	$	157,670