4. INVENTORIES (Details) - USD ($) $ in Thousands	Jan. 31, 2019	May 02, 2018	Apr. 30, 2018
Inventory Disclosure [Abstract]
Raw materials	$ 8,660		$ 8,165
Work-in-process	0		7,964
Total inventories	$ 8,660	$ 8,258	$ 16,129

No definition available.

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Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

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Carrying amount, net of valuation reserves and adjustments, as of the balance sheet date of unprocessed items to be consumed in the manufacturing or production process.

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Carrying amount, net of reserves and adjustments, as of the balance sheet date of merchandise or goods which are partially completed. This inventory is generally comprised of raw materials, labor and factory overhead costs, which require further materials, labor and overhead to be converted into finished goods, and which generally require the use of estimates to determine percentage complete and pricing.

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