Note 8 - Employee Post-employment Benefits - Components of Net Periodic Benefit Cost (Details) - USD ($) $ in Thousands |
3 Months Ended | |
|---|---|---|
Aug. 30, 2016 |
Sep. 01, 2015 |
|
| Pension Plan [Member] | ||
| Service cost | $ 6 | $ 230 |
| Interest cost | 420 | 599 |
| Expected return on plan assets | (91) | (103) |
| Recognized actuarial loss | 338 | 628 |
| Net periodic benefit cost | 673 | 1,354 |
| Postretirement Medical and Life Benefits [Member] | ||
| Service cost | 1 | 1 |
| Interest cost | 9 | 12 |
| Recognized actuarial loss | 17 | 32 |
| Net periodic benefit cost | $ 27 | $ 45 |