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Stock-Based Compensation - Narrative (Details) (USD $)
9 Months Ended 0 Months Ended
Oct. 26, 2014
Oct. 26, 2014
Minimum [Member]
Oct. 26, 2014
Stock options [Member]
Minimum [Member]
Oct. 26, 2014
Stock options [Member]
Maximum [Member]
Oct. 26, 2014
Performance shares [Member]
Oct. 26, 2014
Employee stock unit awards [Member]
Oct. 26, 2014
Non-employee director stock unit awards [Member]
Feb. 26, 2014
CEO [Member]
Market Performance Units, Tranche 1 [Member]
Feb. 26, 2014
CEO [Member]
Market Performance Units, Tranche 1 [Member]
Minimum [Member]
Feb. 26, 2014
CEO [Member]
Market Performance Units, Tranche 2 [Member]
Feb. 26, 2014
CEO [Member]
Market Performance Units, Tranche 2 [Member]
Minimum [Member]
Oct. 26, 2014
Accrued Liabilities [Member]
Non-employee director stock unit awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Vesting period     3 years 4 years   4 years 1 year          
Performance condition, highest potential performance level         200.00%              
Maximum number of shares which would be settled in shares         522,532              
Maximum number of shares which would be settled in cash         522,532              
Target performance metrics for performance unit awards, fiscal year 2015         100.00%              
Target performance metrics for performance unit awards, fiscal year 2014         75.00%              
Target performance metrics for performance unit awards, fiscal year 2013         0.00%              
Change in liability $ 16,000           $ 480,000          
Award vesting percentage               30.00%        
Award performance period               120 days   120 days    
Average per share closing price used to determine vesting rights (in dollars per share)                 $ 35.00   $ 40.00  
Potential per share consideration due upon change in control   $ 40.00                    
Vested but unsettled stock units             179,092          
Share-based compensation liability, current                       $ 700,000