Percentage of voting equity interests acquired at the acquisition date in the business combination.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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-Section 50
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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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-Publisher FASB
-Name Accounting Standards Codification
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-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.12)
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This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(12))
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The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

+ References

No definition available.

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The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

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-Publisher FASB
-Name Accounting Standards Codification
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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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Investments in Companies Accounted for Using the Equity Method - Altoy (Details) - USD ($)		12 Months Ended
	Feb. 01, 2017	Apr. 30, 2018	Apr. 30, 2017	Apr. 30, 2016	Apr. 30, 2015	Jan. 31, 2017	Mar. 31, 2014
Investments in Companies Accounted for Using the Equity Method
Ownership percentage						49.00%
Entity's share of net loss		$ (1,283,000)	$ (119,000)	$ (138,000)
Altoy
Investments in Companies Accounted for Using the Equity Method
Ownership percentage							49.00%
Ownership interest acquired	36.00%
Total ownership interest	85.00%
Cash	$ 625,000
Altoy \| Other assets, long term
Investments in Companies Accounted for Using the Equity Method
Carrying value of investment				$ 386,000
Altoy \| Other income
Investments in Companies Accounted for Using the Equity Method
Entity's share of net loss			$ (119,000)		$ (138,000)