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Retirement and Welfare Plans (Tables) | 12 Months Ended
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Apr. 30, 2016
Retirement and Welfare Plans |
Schedule of amounts recognized in accumulated other comprehensive loss |
(Amounts in thousands) |  | 4/30/2016 |  | 4/25/2015 |
Beginning of year net actuarial loss |  | $ | 37,602 |  | $ | 39,425 |
Net current year actuarial loss |  |  | 2,249 |  |  | 836 |
Amortization of actuarial loss |  |  | (3,001 | ) |  | (2,659 | )
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
End of year net actuarial loss |  | $ | 36,850 |  | $ | 37,602 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Schedule of combined net periodic pension cost and retirement costs |
(Amounts in thousands) |  | 4/30/2016 |  | 4/25/2015 |  | 4/26/2014 |
Service cost |  | $ | 1,358 |  | $ | 1,114 |  | $ | 1,241 |
Interest cost |  |  | 4,938 |  |  | 5,070 |  |  | 4,822 |
Expected return on plan assets |  |  | (4,997 | ) |  | (5,077 | ) |  | (6,800 | )
Net amortization and deferral |  |  | 3,001 |  |  | 2,658 |  |  | 3,388 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Net periodic pension cost (hourly plan) |  |  | 4,300 |  |  | 3,765 |  |  | 2,651 |
401(k)* |  |  | 6,657 |  |  | 6,270 |  |  | 5,802 |
PCRP* |  |  | 3,088 |  |  | 1,377 |  |  | 2,513 |
Other* |  |  | 318 |  |  | 124 |  |  | 223 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Total retirement costs (excluding non-qualified defined benefit retirement plan) |  | $ | 14,363 |  | $ | 11,536 |  | $ | 11,189 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
* | Not determined by an actuary
Schedule of funded status of the defined benefit pension plan |
(Amounts in thousands) |  | 4/30/2016 |  | 4/25/2015 |
Change in benefit obligation |  |  |  |  |  |  |
Benefit obligation at beginning of year |  | $ | 121,080 |  | $ | 116,870 |
Service cost |  |  | 1,358 |  |  | 1,114 |
Interest cost |  |  | 4,938 |  |  | 5,070 |
Actuarial loss |  |  | 221 |  |  | 3,664 |
Benefits paid |  |  | (10,808 | ) |  | (5,638 | )
Administrative expenses |  |  | (418 | ) |  | — |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Benefit obligation at end of year |  |  | 116,371 |  |  | 121,080 |
Change in plan assets |  |  |  |  |  |  |
Fair value of plan assets at beginning of year |  |  | 113,742 |  |  | 111,474 |
Actual return on plan assets |  |  | 2,968 |  |  | 7,906 |
Employer contributions |  |  | 7,000 |  |  | — |
Benefits paid |  |  | (10,808 | ) |  | (5,638 | )
Administrative expenses |  |  | (418 | ) |  | — |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Fair value of plan assets at end of year |  |  | 112,484 |  |  | 113,742 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Funded status |  | $ | (3,887 | ) | $ | (7,338 | )
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Schedule of amounts included in the consolidated balance sheet related to the defined benefit pension plan |
(Amounts in thousands) |  | 4/30/2016 |  | 4/25/2015 |
Other long-term liabilities |  | $ | (3,887 | ) | $ | (7,338 | )
Schedule of actuarial assumptions for the defined benefit pension plan |
|  | 4/30/2016 |  | 4/25/2015 |  | 4/26/2014 |
Discount rate used to determine benefit obligations |  |  | 4.1 | % |  | 4.2 | % |  | 4.4 | %
Discount rate used to determine net benefit cost |  |  | 4.2 | % |  | 4.4 | % |  | 4.0 | %
Long-term rate of return |  |  | 4.3 | % |  | 4.7 | % |  | 4.7 | %
Schedule of fair value of the assets in the defined benefit pension plan | Fiscal 2016
(Amounts in thousands) |  | Level 1(a) |  | Level 2(a) |  | Level 3 |
Cash and equivalents |  | $ | 3,239 |  | $ | 15,440 |  | $ | — |
Equity funds |  |  | 19,505 |  |  | 42 |  |  | — |
Debt funds |  |  | — |  |  | 74,258 |  |  | — |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Total |  | $ | 22,744 |  | $ | 89,740 |  | $ | — |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
(a) | There were no transfers between Level 1 and Level 2 during fiscal 2016.
Fiscal 2015
(Amounts in thousands) |  | Level 1(b) |  | Level 2(b) |  | Level 3 |
Cash and equivalents |  | $ | 149 |  | $ | 3,685 |  | $ | — |
Equity funds |  |  | 23,120 |  |  | 7,702 |  |  | — |
Debt funds |  |  | — |  |  | 79,086 |  |  | — |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Total |  | $ | 23,269 |  | $ | 90,473 |  | $ | — |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
(b) | There were no transfers between Level 1 and Level 2 during fiscal 2015.
Schedule of expected benefit payments for each of the next five fiscal years and for periods thereafter |
(Amounts in thousands) |  | Benefit Payments |
2017 |  | $ | 6,311 |
2018 |  |  | 6,451 |
2019 |  |  | 6,608 |
2020 |  |  | 6,752 |
2021 |  |  | 6,874 |
2022 to 2026 |  |  | 35,659 |
​ | ​ | ​ | ​ | ​
|  | $ | 68,655 |
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​ | ​ | ​ | ​ | ​

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