Presentation and Summary of Significant Accounting Policies - Contract Balances (Details) - USD ($) $ in Thousands	Apr. 30, 2019	May 01, 2018
Accounting Policies [Abstract]
Contract assets, current	$ 1,475	$ 3,815
Contract assets, long-term	0	332
Total contract assets	1,475	4,147
Deferred revenue, current	33,283	32,705
Deferred revenue, long-term	0	147
Total deferred revenue	$ 33,283	$ 32,852

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Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time.

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The carrying amount of consideration received or receivable as of the balance sheet date on potential earnings that were not recognized as revenue in conformity with GAAP, and which are expected to be recognized as such within one year or the normal operating cycle, if longer, including sales, license fees, and royalties, but excluding interest income.

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