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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

    

July 31, 

April 30,

2019

2019

(in thousands)

Liabilities:

 

Interest rate swap (Level 2)

$

13,551

$

5,613

Stock appreciation rights (Level 3)

23,157

23,458

Deferred compensation (Level 3)

1,636

 

1,695

Noncontrolling interest holders (Level 3)

8,181

12,498

Contingent consideration (Level 3)

12,577

 

12,354