Investment Securities (Tables)

12 Months Ended

May. 30, 2015

Investment Securities [Abstract]

Schedule Of Investment Securities

	May 30, 2015
		Gains in	Losses in
		Accumulated	Accumulated	Estimated
	Amortized	Other	Other	Fair
	Cost	Comprehensive	Comprehensive	Value
		Income	Income
US government and agency obligations	$                9,609	$                     21	$                       -	$                9,630
Municipal bonds	76,225	83	-	76,308
Certificates of deposit	2,001	1	-	2,002
Commercial paper	7,491	5	-	7,496
Corporate bonds	136,411	-	47	136,364
Foreign government obligations	1,042	3	-	1,045
Asset backed securities	14,356	-	4	14,352
Mutual funds	2,761	3	-	2,764
Total current investment securities	$            249,896	$                   116	$                     51	$            249,961
Mutual funds	1,199	548	-	1,747
Total noncurrent investment securities	$                1,199	$                   548	$                       -	$                1,747

	May 31, 2014
		Gains in	Losses in
		Accumulated	Accumulated	Estimated
	Amortized	Other	Other	Fair
	Cost	Comprehensive	Comprehensive	Value
		Income	Income
US government and agency obligations	$                8,847	$                     12	$                       -	$                8,859
Municipal bonds	71,659	175	-	71,834
Certificates of deposit	350	1	-	351
Commercial paper	3,927	3	-	3,930
Corporate bonds	102,587	98	-	102,685
Foreign government obligations	1,064	2	-	1,066
Variable rate demand notes	2,000	-	-	2,000
Mutual funds	4,000	13	-	4,013
Total current investment securities	$            194,434	$                   304	$                       -	$            194,738
Mutual funds	999	452	-	1,451
Total noncurrent investment securities	$                   999	$                   452	$                       -	$                1,451

Schedule Of Contractual Maturities Of Investment Securities

	Estimated Fair Value
Within one year	$                  129,297
1-3 years	117,900
	$                  247,197