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Income Taxes (Details) - Schedule of Unrecognized Tax Benefits Roll Forward - USD ($) $ in Thousands	12 Months Ended
	Apr. 30, 2020	Apr. 30, 2019
Schedule of Unrecognized Tax Benefits Roll Forward [Abstract]
Balance at the beginning of the fiscal year	$ 1,258	$ 1,264
Additions based on positions taken in the fiscal year ended April 30, 2020	15	0
Additions based on positions taken in prior years	119	142
Decreases based on positions taken in prior years	(2)	(119)
Lapse in statute of limitations	(36)	(29)
Balance at the end of the fiscal year	$ 1,354	$ 1,258

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Amount of unrecognized tax benefits.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 45
-Paragraph 10B
-URI http://asc.fasb.org/extlink&oid=120406818&loc=SL37586934-109318

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-Section 50
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Amount of decrease in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

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Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return.

+ References

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Amount of increase in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

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Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations.

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-Name Accounting Standards Codification
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-SubTopic 10
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