Note 4 - Fair Value Measurements (Details) - Fair Value Measurements - USD ($) $ in Thousands	May. 30, 2015	Aug. 30, 2014
Assets:
Cash equivalents	$ 43,660	$ 47,552
Pension plan assets	4,691	5,008
Total	48,351	52,560
Liabilities:
Foreign currency forward contracts	577
Total liabilities at fair value	577
Fair Value, Inputs, Level 1 [Member]
Assets:
Cash equivalents	43,660	47,552
Pension plan assets	0	0
Total	43,660	47,552
Liabilities:
Foreign currency forward contracts	0
Total liabilities at fair value	0
Fair Value, Inputs, Level 2 [Member]
Assets:
Cash equivalents	0	0
Pension plan assets	4,691	5,008
Total	4,691	5,008
Liabilities:
Foreign currency forward contracts	577
Total liabilities at fair value	577
Fair Value, Inputs, Level 3 [Member]
Assets:
Cash equivalents	0	0
Pension plan assets	0	0
Total	0	$ 0
Liabilities:
Foreign currency forward contracts	0
Total liabilities at fair value	$ 0