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Valuation and Qualifying Accounts
 12 Months Ended
Dec. 30, 2012
Valuation and Qualifying Accounts [Abstract]  
Valuation and Qualifying Accounts
Valuation and Qualifying Accounts
(in thousands)
 
 
Balance at
Beginning
of Period
  
Charged to
Costs and
Expenses
  
Deductions/Write-offs
 
Balance at
End of Period
Allowance for Doubtful Accounts:
 
  
 
  
 
 
 
Fiscal Year 2012
$
10

  
$
10

  
$
—

 
$
20

Fiscal Year 2011
$
16

  
$
—

  
$
(6
)
 
$
10

Fiscal Year 2010
$
10

  
$
7

  
$
(1
)
 
$
16

 
 
 
 
 
 
 
 
Allowance for Deferred Tax Assets:
 
 
 
 
 
 
 
Fiscal Year 2012
$
56,067

 
$
4,156

 
$
—

 
$
60,223

Fiscal Year 2011
$
52,827

 
$
3,240

 
$
—

 
$
56,067

Fiscal Year 2010
$
55,342

 
$
—

 
$
(2,515
)
 
$
52,827