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Goodwill and Intangible Assets - Schedule of estimated amortization expense of intangible assets (Details)
$ in Thousands
May 31, 2020
USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]  
Fiscal 2021 $ 16,651
Fiscal 2022 10,317
Fiscal 2023 10,243
Fiscal 2024 9,858
Fiscal 2025 9,194
Fiscal 2026 $ 7,210