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Associate Retirement Plans (Tables) | 4 Months Ended
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Apr. 19, 2014
Compensation And Retirement Disclosure [Abstract] |
Components of Net Periodic Pension and Postretirement Benefit Costs | The following table provides the components of net periodic pension and postretirement benefit costs for the first quarters ended April 19, 2014 and April 27, 2013:
|  | Cash Balance Pension Plan |  |  | Super Foods Pension Plan |
(In thousands) 16 Weeks Ended |  | April 19, 2014 |  |  | April 27, 2013 |  |  | April 19, 2014 |
Interest cost |  | $ | 741 |  |  | $ | 770 |  |  | $ | 614 |
Expected return on plan assets |  |  | (1,156 | ) |  |  | (1,353 | ) |  |  | (709 | )
Recognized actuarial net loss |  |  | 305 |  |  |  | 395 |  |  |  | — |
Net periodic benefit |  | $ | (110 | ) |  | $ | (188 | ) |  | $ | (95 | )
|  | SERP |  |  | Spartan Stores Medical Plan |
(In thousands) 16 Weeks Ended |  | April 19, 2014 |  |  | April 27, 2013 |  |  | April 19, 2014 |  |  | April 27, 2013 |
Service cost |  | $ | — |  |  | $ | — |  |  | $ | 57 |  |  | $ | 65 |
Interest cost |  |  | 11 |  |  |  | 12 |  |  |  | 121 |  |  |  | 122 |
Amortization of prior service cost |  |  | — |  |  |  | — |  |  |  | (48 | ) |  |  | (16 | )
Recognized actuarial net loss |  |  | 9 |  |  |  | 10 |  |  |  | 6 |  |  |  | 45 |
Net periodic cost |  | $ | 20 |  |  | $ | 22 |  |  | $ | 136 |  |  | $ | 216 |

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- Definition Tabular disclosure of one or more of the entity's defined benefit pension plans or one or more other defined benefit postretirement plans, separately for pension plans and other postretirement benefit plans including the entity's schedule of fair value of plan assets for defined benefit or other postretirement plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e2417-114920 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=32704760&loc=d3e4179-114921 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e2439-114920 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e2410-114920 + Details
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