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Fair Value Measurements (Tables)
12 Months Ended
Apr. 30, 2020
Fair Value Measurements  
Schedule of liabilities measured at fair value on a recurring basis

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April 30, 

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2020

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2019

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(in thousands)

Interest rate swaps (Level 2)

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$

32,218

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$

5,613

Stock appreciation rights (Level 3)

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24,205

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23,458

Deferred compensation (Level 3)

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1,660

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1,695

Noncontrolling interest holders (Level 3)

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8,300

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12,498

Contingent consideration (Level 3)

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12,354