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Investments - Unrealized Gains and Losses and Fair Value (Details) - USD ($)
$ in Thousands
Oct. 29, 2022
Apr. 30, 2022
Summary of investments    
Gross Unrealized  Gains $ 2,337 $ 2,726
Gross Unrealized  Losses (1,166) (895)
Fair Value 42,194 51,537
Equity securities    
Summary of investments    
Gross Unrealized  Gains 1,105 1,448
Gross Unrealized  Losses (94) (86)
Fair Value 13,669 13,905
Fixed income    
Summary of investments    
Gross Unrealized  Gains 22 28
Gross Unrealized  Losses (1,072) (809)
Fair Value 24,584 33,521
Other    
Summary of investments    
Gross Unrealized  Gains 1,210 1,250
Gross Unrealized  Losses 0 0
Fair Value $ 3,941 $ 4,111