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Condensed Consolidated Statements of Cash Flows (Reconciliation) - USD ($)
$ in Thousands
Apr. 30, 2018
Apr. 30, 2017
Reconciliation of cash, cash equivalents, and restricted cash as shown in the statements of cash flows    
Cash and cash equivalents $ 1,036,045 $ 498,931
Restricted cash included in Other assets 1,390 2,173
Total cash, cash equivalents, and restricted cash $ 1,037,435 $ 501,104