INCOME TAXES - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Aug. 01, 2015	Aug. 02, 2014	May. 02, 2015	May. 03, 2014
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
Federal tax expense (benefit)	$ (0.7)
State tax expense (benefit)	(3.8)
Foreign tax credit carryforward	3.7
Income tax expense	$ 7.4	$ 7.0
Effective income tax rate	23.90%	24.60%
Unrecognized tax benefits, income tax penalties and interest accrued	$ 0.1
Total unrecognized tax benefit	0.9
Unrecognized tax benefit recorded	$ 0.1
Malta | Investment Tax Credit Carryforward
Valuation Allowance [Line Items]
Investment tax credit on qualified expenditures, percent	30.00%
Unused credits	$ 16.1
Domestic federal and state
Valuation Allowance [Line Items]
Valuation allowances against deferred tax assets	1.2			$ 1.2
Federal
Valuation Allowance [Line Items]
Operating loss carryforwards	2.1
State
Valuation Allowance [Line Items]
Operating loss carryforwards	$ 80.6