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Recent Accounting Standards (Details) - USD ($) $ in Thousands | Jan. 31, 2020 | Apr. 30, 2019
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Recently Adopted Accounting Standards [Abstract] |  |
Operating lease liabilities | $ 179,731 |
ROU assets | $ 142,308 | $ 0
ASU 2016-02 [Member] |  |
Recently Adopted Accounting Standards [Abstract] |  |
Operating lease liabilities |  | 178,000
ROU assets |  | $ 142,000

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- Definition Present value of lessee's discounted obligation for lease payments from operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977 + Details
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