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Segment Information, Reconciliation of GAAP Net Income to Non-GAAP EBITDA and Adjusted EBITDA (Details) - USD ($)
$ in Thousands
 3 Months Ended
Jul. 31, 2020
Jul. 31, 2019
Reconciliation of GAAP Net Income to Non-GAAP EBITDA and Adjusted EBITDA [Abstract]    
Net Income $ 16,334 $ 3,624
Interest expense 4,614 6,077
Provision for Income Taxes 13,400 343
Depreciation and Amortization 49,507 42,219
Non-GAAP EBITDA 83,855 52,263
Restructuring and related charges 2,218 10,735
Foreign exchange transaction losses (gains) 82 (2,652)
Interest and other income (4,391) (2,833)
Non-GAAP Adjusted EBITDA [1] $ 81,764 $ 57,513
[1] Adjusted EBITDA is Adjusted Contribution to Profit with depreciation and amortization added back.