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INCOME TAXES - Narrative (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended 12 Months Ended
Jan. 30, 2016
Jan. 31, 2015
Jan. 30, 2016
Jan. 31, 2015
May. 02, 2015
Valuation Allowance [Line Items]          
Deferred tax benefit related to release of foreign valuation allowance         $ 7.2
Deferred tax benefit related to release of state valuation allowance         1.4
Valuation allowances against deferred tax assets $ 1.2   $ 1.2   $ 1.2
Federal tax expense (benefit)     (0.7)    
State tax expense (benefit)     (3.8)    
Foreign tax credit carryforward 4.3   4.3    
Research expenditure credit carry-forward 0.5   0.5    
Income tax expense $ 5.5 $ 8.1 $ 18.6 $ 23.8  
Effective income tax rate 24.10% 23.00% 23.10% 24.20%  
Unrecognized tax benefits, income tax penalties and interest accrued $ 0.1   $ 0.1    
Total unrecognized tax benefit 0.9   0.9    
Unrecognized tax benefit recorded     0.1    
Federal          
Valuation Allowance [Line Items]          
Operating loss carryforwards 2.1   2.1    
State          
Valuation Allowance [Line Items]          
Operating loss carryforwards $ 80.6   $ 80.6    
Foreign | Malta | Investment Tax Credit Carryforward          
Valuation Allowance [Line Items]          
Investment tax credit on qualified expenditures, percent 30.00%   30.00%    
Unused credits $ 16.1   $ 16.1