Note 5 - Property, Equipment, and Assets Held for Sale (Details Textual) - USD ($) |
3 Months Ended | ||
|---|---|---|---|
Aug. 30, 2016 |
Sep. 01, 2015 |
May 31, 2016 |
|
| Disposal Group, Including Discontinued Operation, Assets, Current | $ 11,849,000 | $ 4,642,000 | |
| Property, Plant and Equipment, Disposals | 0 | $ 2,100,000 | |
| Gain (Loss) on Disposition of Property Plant Equipment | 100,000 | 600,000 | |
| Proceeds from Sale of Property Plant and Equipment, Net | $ 100,000 | $ 2,700,000 | |