XML 68 R49.htm IDEA: XBRL DOCUMENT v2.4.0.8
Associate Retirement Plans - Components of Net Periodic Pension and Postretirement Benefit Costs (Detail) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 6 Months Ended
Jul. 12, 2014
Jul. 20, 2013
Jul. 12, 2014
Jul. 20, 2013
Cash Balance Pension Plan [Member]
        
Defined Benefit Plan Disclosure [Line Items]        
Interest cost $ 557 $ 517 $ 1,298 $ 1,287
Expected return on plan assets (868) (944) (2,024) (2,297)
Recognized actuarial net loss 228 300 533 695
Net periodic income (83) (127) (193) (315)
Settlement expense 522   522  
Total expense (income) 439 (127) 329 (315)
Super Foods Pension Plan [Member]
        
Defined Benefit Plan Disclosure [Line Items]        
Interest cost 461   1,075  
Expected return on plan assets (532)   (1,241)  
Net periodic income (71)   (166)  
Total expense (income) (71)   (166)  
SERP [Member]
        
Defined Benefit Plan Disclosure [Line Items]        
Interest cost 8 8 19 20
Recognized actuarial net loss 7 6 16 16
Total expense (income) 15 14 35 36
Spartan Stores Medical Plan [Member]
        
Defined Benefit Plan Disclosure [Line Items]        
Service cost 43 59 100 124
Interest cost 91 89 212 211
Amortization of prior service cost (37) (13) (85) (29)
Recognized actuarial net loss 5 41 11 86
Total expense (income) $ 102 $ 176 $ 238 $ 392