Investments - Available For Sale Securities (Details) - USD ($) $ in Thousands	Oct. 29, 2022	Apr. 30, 2022
Available-For-Sale Securities
Amortized Cost		$ 24,751
Gross Unrealized Losses		(35)
Total	$ 0	24,716
Municipal securities
Available-For-Sale Securities
Amortized Cost		19,756
Gross Unrealized Losses		(31)
Total		19,725
U.S. government securities
Available-For-Sale Securities
Amortized Cost		4,995
Gross Unrealized Losses		(4)
Total		$ 4,991

Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 2
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-Publisher FASB
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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 210
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