Employee Benefit Plans (Details) - Share-based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity - RSUs and PSUs [Member] - $ / shares	12 Months Ended
Apr. 30, 2022	Apr. 30, 2021	Apr. 30, 2020
Employee Benefit Plans (Details) - Share-based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Line Items]
Balance, Shares	65,609	57,000	13,000
Balance, Weighted-Average Exercise Price	$ 10.09	$ 10.26	$ 11.38
Shares Granted	26,250	47,250
Granted, Weighted-Average Exercise Price	$ 9.84	$ 10.03
Shares Vested	(15,066)	(3,250)
Vested, Weighted-Average Exercise Price	$ 10.32	$ 11.38
Shares Forfeited	(2,575)
Forfeited, Weighted-Average Exercise Price	$ 9.97

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- Definition

The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

+ References

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- Definition

Gross number of share options (or share units) granted during the period.

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- Definition

Number of options outstanding, including both vested and non-vested options.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(ii)
-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(i)
-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

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- Definition

Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

+ References

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- Definition

Weighted-average exercise price, at which grantee can acquire shares reserved for issuance, for fully vested and expected to vest exercisable or convertible options. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

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- Definition

Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated.

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- Definition

Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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- Definition

Number of options vested.

+ References

No definition available.

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