XML 98 R77.htm IDEA: XBRL DOCUMENT v3.8.0.1
Associate Retirement Plans - Schedule of Benefit Obligations, Pension & Postretirement Benefit Plans (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 30, 2017
Dec. 31, 2016
Jan. 02, 2016
Fair value of plan assets:      
Balance at beginning of year $ 81,982    
Balance at end of year 81,255 $ 81,982  
Components of net amount recognized in financial position:      
Noncurrent liabilities (15,687) (16,266)  
Pension Plan [Member]      
Projected/Accumulated benefit obligation:      
Balance at beginning of year 80,350 83,398  
Interest cost 2,345 2,977 $ 3,325
Actuarial loss 4,662 1,598  
Benefits paid (7,204) (7,623)  
Balance at end of year 80,153 80,350 83,398
Fair value of plan assets:      
Balance at beginning of year 81,982 84,753  
Actual return on plan assets 6,477 4,852  
Benefits paid (7,204) (7,623)  
Balance at end of year 81,255 81,982 84,753
Funded (unfunded) status 1,102 1,632  
Components of net amount recognized in financial position:      
Noncurrent assets 1,102 1,632  
Net asset (liability) 1,102 1,632  
Amounts recognized in AOCI:      
Net actuarial loss 18,205 16,938  
Accumulated other comprehensive loss $ 18,205 $ 16,938  
Weighted average assumptions at measurement date:      
Discount rate 3.45% 3.82%  
Retiree Medical Plan [Member]      
Projected/Accumulated benefit obligation:      
Balance at beginning of year $ 9,663 $ 9,179  
Service cost 184 187 231
Interest cost 345 345 404
Actuarial loss 303 213  
Benefits paid (296) (261)  
Balance at end of year 10,199 9,663 $ 9,179
Fair value of plan assets:      
Company contributions 296 261  
Benefits paid (296) (261)  
Funded (unfunded) status (10,199) (9,663)  
Components of net amount recognized in financial position:      
Current liabilities (417) (412)  
Noncurrent liabilities (9,782) (9,251)  
Net asset (liability) (10,199) (9,663)  
Amounts recognized in AOCI:      
Net actuarial loss 1,678 1,434  
Prior service credit (250) (408)  
Accumulated other comprehensive loss $ 1,428 $ 1,026  
Weighted average assumptions at measurement date:      
Discount rate 3.72% 4.26%  
Ultimate health care cost trend rate 5.00% 5.00%