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INVENTORIES (Details) - Schedule of Inventory, Current - USD ($) $ in Thousands	Jul. 31, 2020	Apr. 30, 2020
Schedule of Inventory, Current [Abstract]
Raw Materials and Component Parts	$ 13,942	$ 15,470
Work in Progress	6,788	6,104
Finished Goods	953	1,384
	$ 21,683	$ 22,958

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- References

No definition available.

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Amount before valuation and LIFO reserves of completed merchandise or goods expected to be sold within one year or operating cycle, if longer.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.6(a)(1))
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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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-Topic 210
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-Section 45
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Amount before valuation and LIFO reserves of raw materials expected to be sold, or consumed within one year or operating cycle, if longer.

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Amount before valuation and LIFO reserves of merchandise or goods in the production process expected to be completed within one year or operating cycle, if longer.

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