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Note 11 - Employee Benefit and Retirement Plans (Detail) - Medical and Life Insurance Benefits - Retired Employees (USD $)
In Thousands, unless otherwise specified
12 Months Ended 12 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 26, 2010
Jun. 30, 2011
Medical and Life Insurance Benefits [Member]
Balance at Beginning of Period [Member]
Jun. 26, 2010
Medical and Life Insurance Benefits [Member]
Balance at Beginning of Period [Member]
Jun. 27, 2009
Medical and Life Insurance Benefits [Member]
Balance at Beginning of Period [Member]
Jun. 30, 2012
Medical and Life Insurance Benefits [Member]
Balance at End of Period [Member]
Jun. 30, 2011
Medical and Life Insurance Benefits [Member]
Balance at End of Period [Member]
Jun. 26, 2010
Medical and Life Insurance Benefits [Member]
Balance at End of Period [Member]
Jun. 30, 2012
Medical and Life Insurance Benefits [Member]
Jun. 30, 2011
Medical and Life Insurance Benefits [Member]
Jun. 26, 2010
Medical and Life Insurance Benefits [Member]
Jun. 30, 2011
Balance at Beginning of Period [Member]
Jun. 26, 2010
Balance at Beginning of Period [Member]
Jun. 27, 2009
Balance at Beginning of Period [Member]
Jun. 30, 2012
Balance at End of Period [Member]
Jun. 30, 2011
Balance at End of Period [Member]
Jun. 26, 2010
Balance at End of Period [Member]
Benefit obligation       $ 11,804 $ 11,603 $ 10,817 $ 14,230 $ 11,804 $ 11,603       $ 119,892 $ 117,974 $ 96,167 $ 145,595 $ 119,891 $ 117,974
Discount rate 5.44%                 3.92% 5.44% 5.37%            
Rate of compensation increase                   2.64% 2.64% 2.64%            
Change in plan assets                                    
Employer contributions 1,268 625 483             552 662 977            
Amounts recognized in balance sheet                                    
Current postretirement benefit obligation (23) (23) (24)             (623) (657) (681)            
Non-current postretirement benefit obligation (38,204) (11,321) (19,083)             (13,606) (11,147) (10,922)            
Net amount recognized (38,227) (11,344) (19,107)             (14,230) (11,804) (11,603)            
Weighted average assumptions – net periodic benefit cost                                    
Discount rate                   5.44% 5.37% 6.50%            
Rate of compensation increase                   2.64% 2.64% 2.64%            
Amounts not yet reflected in net periodic benefit cost and included in accumulated other comprehensive loss                                    
Prior service credit (349) (585) (834)             1,888 2,793 3,699            
Accumulated loss (13,248) (2,450) (11,668)             (3,400) (1,422) (1,511)            
Amounts not yet recognized as a component of net periodic benefit cost (13,597) (3,035) (12,502)             (1,512) 1,371 2,188            
Net periodic benefit cost in excess of accumulated contributions                   (12,718) (13,175) (13,791)            
Service cost 2,168 2,278 1,707             386 353 287            
Interest cost 6,538 6,541 6,532             611 591 646            
Amortization of prior service credit 234 249 381             (905) (905) (905)            
Amortization of accumulated loss                   2 10              
Net periodic benefit cost 17,765 1,761 11,318             94 49 28            
Estimated amounts that will be amortized from accumulated other comprehensive loss over the next year                                    
Prior service credit (cost) (234) (234)               905 905 905            
Net gain (loss) 15,298 (2) 9,370             (158) (19) (28)            
                  747 886 877            
Healthcare cost trend rate assumed for next year 8.80% 9.70% 7.66%                              
Rate to which the cost trend rate gradually declines 4.50% 4.50% 4.50%                              
Year that the rate reaches the rate at which it is assumed to remain 2027 2027 2027                              
Benefits paid (5,803) (5,307) (5,349)             (552) (662) (977)            
Actuarial (gain) loss 23,403 (4,480) 21,426             1,981 (81) 830            
Benefit obligation       $ 11,804 $ 11,603 $ 10,817 $ 14,230 $ 11,804 $ 11,603       $ 119,892 $ 117,974 $ 96,167 $ 145,595 $ 119,891 $ 117,974