Note 9 - Income Taxes (Details Textual) - USD ($) $ in Thousands |
3 Months Ended | 12 Months Ended | |
|---|---|---|---|
Aug. 30, 2016 |
Sep. 01, 2015 |
May 31, 2016 |
|
| Reasonably Possible Amounts Will Change Within Next Twelve Months [Member] | |||
| Unrecognized Tax Benefits | $ 400 | ||
| Unrecognized Tax Benefit Reclassified Against Deferred Tax Assets | 3,700 | $ 3,700 | |
| Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued | 400 | 400 | |
| Deferred Tax Assets, Valuation Allowance | 106,200 | 89,900 | |
| Income Tax Expense (Benefit) | (1,694) | $ (1,023) | |
| Deferred Tax Assets, Operating Loss Carryforwards, Domestic | 16,300 | ||
| Unrecognized Tax Benefits | 4,600 | 4,500 | |
| Unrecognized Tax Benefits that Would Impact Effective Tax Rate | $ 2,400 | $ 2,300 | |