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POSTRETIREMENT HEALTHCARE BENEFITS (Tables) (Postretirement Benefit Plans)
 12 Months Ended
Dec. 30, 2012
Postretirement Benefit Plans
  
Defined Benefit Plan Disclosure [Line Items]  
Change in benefit obligation
Change in Benefit Obligation
 
2011
 
 
 
Benefit obligation at beginning of year
 
$
5,852

Interest cost
 
161

Amendment
 
(5,074
)
Actuarial gain
 
(122
)
Net benefits paid
 
(817
)
 
 
 
Benefit obligation at end of year
 
$
—
Components of net periodic benefit cost and other amounts recognized in other comprehensive losses
Components of Net Periodic Benefit Cost and Other Amounts Recognized in Other Comprehensive Losses
Net Postretirement Benefit Cost
 
2011
 
2010
 
 
 
 
 
Interest cost
 
$
161

 
$
385

Amortization of prior service credits
 
(27,695
)
 
(4,598
)
Amortization of net actuarial losses
 
4,120

 
487

 
 
 
 
 
Total net periodic benefit cost
 
$
(23,414
)
 
$
(3,726
)
 
 
 
 
 
Other Changes in Benefit Obligation Recognized in Other Comprehensive Losses Before Tax
Net actuarial (gain) loss
 
$
(122
)
 
$
95

Prior service credit
 
(5,074
)
 
(2,465
)
Prior service credit recognized
 
27,695

 
4,598

Net actuarial loss recognized
 
(4,120
)
 
(487
)
 
 
 
 
 
Total recognized in other comprehensive losses
 
$
18,379

 
$
1,741

 
 
 
 
 
Total recognized in net periodic benefit cost and other comprehensive losses
 
$
(5,035
)
 
$
(1,985
)