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Commitments and Contingencies (Tables)
12 Months Ended
Apr. 30, 2017
Commitments and Contingencies Disclosure [Abstract]  
Schedule of Future Minimum Rental Payments for Operating Leases
Future minimum lease payments due each fiscal year are as follows (in thousands):
2018
$
177,126

2019
382,650

2020
683,256

2021
759,161

2022
729,780

Thereafter
$
4,482,027

Total
$
7,214,000