Note 8 - Employee Post-employment Benefits (Details Textual)
$ in Thousands |
12 Months Ended |
|
Jun. 06, 2017
USD ($)
|
May 31, 2016
USD ($)
|
Jun. 02, 2015
USD ($)
|
| Defined Benefit Pension Plans |
3
|
|
|
| Employee-related Liabilities, Current |
$ 15,505
|
$ 14,561
|
|
| Share-based Compensation Arrangement by Share-based Payment Award Accelerated Compensation Cost |
3,600
|
2,100
|
$ 7,100
|
| Deferred Compensation, Net |
5,600
|
6,700
|
|
| Prepaid Expense, Current |
10,499
|
11,508
|
|
| Other Assets, Noncurrent |
41,508
|
45,751
|
|
| Investment in RTI Common Stock and Related Liability Payable in RTI Common Stock |
300
|
500
|
|
| Severance Costs |
$ 4,200
|
1,600
|
|
| Defined Benefit Plan, Target Allocation, Percentage of Assets, Alternative Investments |
16.00%
|
|
|
| Defined Benefit Plan, Health Care Cost Trend Rate Assumed, Next Fiscal Year |
7.10%
|
|
|
| Defined Benefit Plan, Ultimate Health Care Cost Trend Rate |
5.00%
|
|
|
| Defined Benefit Plan Health Care Cost Trend Rate Assumed for Next Fiscal Year, Impact on Net Periodic Postretirement Benefit Expense, Percent |
1.00%
|
|
|
| Number of Defined Contribution Plans Sponsored By Entity |
2
|
|
|
| Defined Contribution Plan, Employer Matching Contribution, Percent of Match |
25.00%
|
|
|
| Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay |
4.00%
|
|
|
| Defined Contribution Plan, Cost |
$ 300
|
300
|
0
|
| Other Liabilities, Noncurrent |
60,397
|
67,093
|
|
| Related to Two Other Departures [Member] |
|
|
|
| Payments for Restructuring |
100
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award Accelerated Compensation Cost |
200
|
|
|
| Severance Costs |
800
|
|
|
| Employee Severance [Member] |
|
|
|
| Employee-related Liabilities, Current |
900
|
300
|
|
| Severance Costs |
5,807
|
1,006
|
|
| Former Chairman, President, and Chief Executive Officer [Member] |
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award Accelerated Compensation Cost |
900
|
|
|
| Severance Costs |
3,000
|
|
|
| Former President and Chief Executive Officer [Member] |
|
|
|
| Deferred Compensation Arrangement with Individual, Allocated Share-based Compensation Expense, Forfeiture Credits |
|
1,600
|
|
| Former Executives [Member] |
|
|
|
| Severance Costs |
|
|
$ 300
|
| Pension Plan [Member] |
|
|
|
| Defined Benefit Plan, Expected Future Benefit Payment, Next Twelve Months |
3,716
|
|
|
| Cash Surrender Value of Life Insurance |
25,400
|
27,900
|
|
| Cash Held in Trust for Benefit Payments, Reclassified as Restricted Cash |
1,400
|
400
|
|
| Postretirement Medical and Life Benefits [Member] |
|
|
|
| Defined Benefit Plan, Expected Future Benefit Payment, Next Twelve Months |
123
|
|
|
| Defined Benefit Plan, Expected Amortization of Gain (Loss), Next Fiscal Year |
700
|
|
|
| Deferred Compensation Plan [Member] |
|
|
|
| Prepaid Expense, Current |
600
|
700
|
|
| Other Assets, Noncurrent |
5,000
|
6,000
|
|
| Other Liabilities, Noncurrent |
$ 5,000
|
$ 6,000
|
|
| Equity Securities [Member] |
|
|
|
| Defined Benefit Plan, Plan Assets, Target Allocation, Percentage |
56.00%
|
|
|
| Fixed Income Securities [Member] |
|
|
|
| Defined Benefit Plan, Plan Assets, Target Allocation, Percentage |
28.00%
|
|
|
| Minimum [Member] |
|
|
|
| Primary Investment Objectives, Focus on Time Horizon |
10 years
|
|
|
| Minimum [Member] | Equity Securities [Member] |
|
|
|
| Defined Benefit Plan, Plan Assets, Target Allocation, Percentage |
41.00%
|
41.00%
|
|
| Minimum [Member] | Fixed Income Securities [Member] |
|
|
|
| Defined Benefit Plan, Plan Assets, Target Allocation, Percentage |
13.00%
|
13.00%
|
|
| Retirement Plan [Member] |
|
|
|
| Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year |
$ 0
|
|
|
| Executive Supplemental Pension Plan and Management Retirement Plan [Member] |
|
|
|
| Defined Benefit Plan, Expected Future Benefit Payment, Next Twelve Months |
$ 3,000
|
|
|