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Stockholders' Equity and Benefit Plans (Details 3) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 29, 2012
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Dec. 31, 2011
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Jan. 01, 2011
Deferred Compensation and Savings Plans      
Minimum years of service to be eligible for employer 401(k) matching 90 days 1 year  
Minimum hours worked to be eligible for employer 401(k) matching 250 1,000  
Percentage of employee contributions in which Company will provide a matching contribution of up to 3 percent of employee compensation, before amendment 50.00%    
Percentage of eligible compensation, on 50% of employee contributions, matched by employer before amendment   3.00%  
Percentage of employee contributions in which Company will provide a matching contribution of between 4 and 6 percent of employee compensation, before amendment   25.00%  
Percentage of eligible compensation, first level, matched by employer after amendment 6.00%    
Employer's matching contributions under the plan $ 2.7 $ 1.6 $ 1.3
Maximum additional contribution by employer (as a percent) 15.00%    
Maximum percentage of salary that may be deferred by participating employees 50.00%    
Percentage of employee contributions in which Company will provide a matching contribution of up to 6 percent of employee compensation 6.00%    
Maximum percentage of annual bonus that may be deferred by participating employees 100.00%    
Asset related to invested balances recorded in intangibles and other assets-net 3.2    
Liability related to participants' invested balances recorded in accrued expenses other $ 2.8    
Minimum
      
Deferred Compensation and Savings Plans      
Percentage of eligible compensation, on 25% of employee contributions, matched by employer before amendment   4.00%  
Maximum
      
Deferred Compensation and Savings Plans      
Percentage of eligible compensation, on 25% of employee contributions, matched by employer before amendment   6.00%