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Fair Value (Tables)
9 Months Ended
Jan. 31, 2018
Fair Value Disclosures [Abstract]  
Fair Value Measurements, Recurring and Nonrecurring
The carrying amounts and estimated fair values of our financial instruments are as follows:
(in 000s)
 
As of
 
January 31, 2018
 
January 31, 2017
 
April 30, 2017
 
 
Carrying
Amount

 
Estimated
Fair Value

 
Carrying
Amount

 
Estimated
Fair Value

 
Carrying
Amount

 
Estimated
Fair Value

Assets:
 
 
 
 
 
 
 
 
 
 
 
 
Cash and cash equivalents
 
$
187,366

 
$
187,366

 
$
221,172

 
$
221,172

 
$
1,011,331

 
$
1,011,331

Cash and cash equivalents - restricted
 
83,033

 
83,033

 
70,166

 
70,166

 
106,208

 
106,208

Receivables, net - short-term
 
791,618

 
791,618

 
787,865

 
787,865

 
162,775

 
162,775

Receivables, net - long-term
 
67,227

 
67,227

 
66,251

 
66,251

 
52,898

 
52,898

Liabilities:
 
 
 
 
 
 
 
 
 
 
 
 
Long-term debt (excluding debt issuance costs)
 
2,292,612

 
2,365,881

 
2,593,564

 
2,672,370

 
1,502,735

 
1,569,033

Contingent consideration
 
11,906

 
11,906

 
9,332

 
9,332

 
10,428

 
10,428