Note 3 - Fair Value Measurements (Details) - Fair Value Measurments (USD $) In Thousands, unless otherwise specified	Aug. 30, 2014	Aug. 31, 2013
Assets:
Cash equivalents	$ 47,552	$ 33,325
Pension plan assets	5,008	4,939
Total	52,560	38,264
Fair Value, Inputs, Level 1 [Member]
Assets:
Cash equivalents	47,552	33,325
Total	47,552	33,325
Fair Value, Inputs, Level 2 [Member]
Assets:
Pension plan assets	5,008	4,939
Total	$ 5,008	$ 4,939