Note 12 - Summary of Compensation Expense for All Share-Based Compensation (Details) $ in Thousands	Aug. 27, 2016 USD ($)
Share Based Awards [Member]
2017	$ 2,576
2018	2,165
2019	1,484
2020	652
2021	83
Total	6,960
Restricted Stock [Member]
2017	4,101
2018	4,214
2019	3,380
2020	1,181
2021
Total	12,876
2017	6,677
2018	6,379
2019	4,864
2020	1,833
2021	83
Total	$ 19,836