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Subsequent Events	6 Months Ended
	Oct. 31, 2019
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events In December 2019, the Company initiated a restructuring, which included the addition of a new Vice President of Information Technology to lead the transformation and modernization of the Company's information systems, and a reduction in workforce primarily in its domestic operations to reduce operating expenses on an ongoing basis. This restructuring also included a plan for closure of the Company’s subsidiary in China, a commercial sales organization for the Company’s products in China. The Company expects to record a charge in the range of $385,000 to $535,000 in the third quarter of fiscal year 2020 as a result of the restructuring consisting primarily of hiring and relocation expenses and one-time termination benefits for employee severance and benefits. The majority of these expenses are expected to be paid during the third quarter of fiscal year 2020.

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- Definition

The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 855
-URI http://asc.fasb.org/topic&trid=2122774

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