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Fair Value Measurements (Tables)
3 Months Ended
Jul. 31, 2019
Fair Value Measurements  
Schedule of assets and liabilities measured at fair value on a recurring basis

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July 31, 

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April 30,

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2019

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2019

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(in thousands)

Liabilities:

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Interest rate swap (Level 2)

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$

13,551

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$

5,613

Stock appreciation rights (Level 3)

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23,157

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23,458

Deferred compensation (Level 3)

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1,636

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1,695

Noncontrolling interest holders (Level 3)

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8,181

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12,498

Contingent consideration (Level 3)

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12,577

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12,354