Pension and Other Postretirement Benefits - Additional Information (Details) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | |
|---|---|---|---|
Aug. 27, 2016 |
Aug. 27, 2016 |
Nov. 28, 2015 |
|
| Weighted-average assumptions used to determine benefit obligation: | |||
| Weighted-average discount rate, rounded amount | 0.25% | ||
| Cash contributions | $ 100 | $ 201 | |
| Qualified Pension Plans [Member] | |||
| Weighted-average assumptions used to determine benefit obligation: | |||
| Effect of plan amendment on net periodic benefit cost | 445 | 445 | |
| Effect of plan amendment on net periodic benefit cost compared to prior approach | 1,343 | ||
| Nonqualified Pension Plans [Member] | |||
| Weighted-average assumptions used to determine benefit obligation: | |||
| Effect of plan amendment on net periodic benefit cost | 58 | 58 | |
| Effect of plan amendment on net periodic benefit cost compared to prior approach | 14 | ||
| Other Noncurrent Assets [Member] | |||
| Weighted-average assumptions used to determine benefit obligation: | |||
| Restricted trust, included in Other noncurrent assets | $ 641 | $ 641 | $ 729 |