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Fair Value Measurements (Tables)
9 Months Ended
Jan. 31, 2020
Fair Value Measurements  
Schedule of assets and liabilities measured at fair value on a recurring basis

    

January 31, 

April 30,

2020

2019

(in thousands)

Interest rate swap (Level 2)

$

18,982

$

5,613

Stock appreciation rights (Level 3)

23,613

23,458

Deferred compensation (Level 3)

1,628

 

1,695

Noncontrolling interest holders (Level 3)

8,139

12,498

Contingent consideration (Level 3)

13,067

 

12,354