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Discontinued Operations (Tables)
9 Months Ended
Sep. 30, 2012
Discontinued Operations [Abstract]  
Schedule of income from discontinued operations
 
 
Three Months Ended
 
Nine Months Ended
 
 
September 30, 2012
 
October 2, 2011
 
September 30, 2012
 
October 2, 2011
Revenues
 
$

 
$

 
$

 
$
546,453

 
 
 
 
 
 
 
 
 
Income (loss) from discontinued operations, net of
     income taxes:
 
 
 
 
 
 
 
 
Income (loss) from discontinued
      operations before income taxes
 
$
341

 
$
(2,287
)
 
$
341

 
$
1,992

Benefit from (provision for) income taxes
 
443

 
846

 
443

 
(874
)
 
 
784

 
(1,441
)
 
784

 
1,118

Loss on disposal of discontinued
      operations, net of income taxes
 
(254
)
 
(5,069
)
 
(254
)
 
(8,849
)
Net income (loss) from discontinued
   operations
 
$
530

 
$
(6,510
)
 
$
530

 
$
(7,731
)