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Share-based Compensation	6 Months Ended
	Oct. 31, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Share-based Compensation	I. Share-based Compensation The stockholders approved the 2017 Omnibus Incentive Plan (“2017 Plan”) on August 30, 2017, which enables the Company to grant a broad range of equity, equity-related, and non-equity types of awards, with potential recipients including directors, consultants and employees. This plan replaces the 2010 Stock Option Plan for Directors and the 2008 Key Employee Stock Option Plan. No new awards will be granted under the prior plans. All outstanding options granted under the prior plans will remain subject to and be paid under the prior plans. At the date of approval of the 2017 Plan there were 280,100 shares available for issuance under the prior plans. These shares and any outstanding awards that subsequently cease to be subject to such awards are available under the 2017 Plan. The 2017 Plan did not increase the total number of shares available for issuance under the Company’s equity compensation plans. The Company issued restricted stock units (“RSUs”) under the 2017 Plan and recorded stock-based compensation expense of $40,000 during the three and six months ended October 31, 2017 in accordance with ASC 718. The RSUs include both a service and performance component vesting over a three year period. The recognized expense is based upon the vesting period for service criteria and estimated attainment of the performance criteria at the end of the three year period based on cumulative days incurred and remaining over the three year period. The remaining estimated compensation expense of $569,000 will be recorded over the remaining three year period.

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- Definition

The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-URI http://asc.fasb.org/topic&trid=2228938

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 50
-URI http://asc.fasb.org/subtopic&trid=2208855

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- References

No definition available.

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