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(15) Stockholders' Equity (Tables)
 12 Months Ended
Jan. 01, 2012
Debt and Equity [Abstract]  
Summary of Stockholders' Equity
 
 
Treasury Stock
 
 
2011
 
2010
 
2009
Number of shares at beginning of year
 
52,050

 
17,492

 
1,220

Repurchase of common stock
 
30,983

 
35,406

 
16,911

Common shares issued:
 
 
 
 
 
 
     Upon exercises of stock options, net
 
(1,461
)
 
(383
)
 
(524
)
     Upon grant of restricted stock and for
        directors fees
 
(1,163
)
 
(470
)
 
(52
)
Other
 
291

 
5

 
(63
)
Number of shares at end of year
 
80,700

 
52,050

 
17,492