DEBT (Textuals) (Details)			6 Months Ended
	Oct. 27, 2017 USD ($)	Apr. 29, 2015	Sep. 30, 2018 USD ($)
Revolving Credit Facility
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity	$ 10,000,000		$ 50,000,000
Line of credit facility, outstanding amount	7,200,000
Remaining borrowing capacity			13,642,000
Additional borrowing capacity			70,000,000
Incremental borrowing amount			$ 5,000,000
Borrowing base, as percentage of eligible accounts receivables less reserves			95.00%
Monthly unused fee, rate per annum			0.25%
Letters of credit outstanding			$ 893,000
Fixed charge coverage ratio		1.00
Line of credit outstanding			$ 26,504,000
Revolving Credit Facility | London Interbank Offered Rate (LIBOR) | Minimum
Line of Credit Facility [Line Items]
Basis spread on variable rate (as percent)			1.50%
Revolving Credit Facility | London Interbank Offered Rate (LIBOR) | Maximum
Line of Credit Facility [Line Items]
Basis spread on variable rate (as percent)			1.75%
Letter of Credit
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity			$ 5,000,000
Term loan
Line of Credit Facility [Line Items]
Face amount of debt	$ 140,000,000
Debt term	5 years
Debt issuance costs, net			7,270,000
Unamortized debt issuance costs			5,845,000
Term loan | London Interbank Offered Rate (LIBOR)
Line of Credit Facility [Line Items]
Basis spread on variable rate (as percent)	4.50%
Term loan | London Interbank Offered Rate (LIBOR) | Minimum
Line of Credit Facility [Line Items]
Basis spread on variable rate (as percent)	3.75%
Term loan | London Interbank Offered Rate (LIBOR) | Maximum
Line of Credit Facility [Line Items]
Basis spread on variable rate (as percent)	4.50%
Working capital facilities
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity			29,000,000
Short-term debt, outstanding balance			$ 10,600,000
Working capital facilities | Minimum
Line of Credit Facility [Line Items]
Basis spread on variable rate (as percent)			0.80%
Working capital facilities | Maximum
Line of Credit Facility [Line Items]
Basis spread on variable rate (as percent)			3.60%