Presentation and Summary of Significant Accounting Policies - Goodwill (Detail) - USD ($) $ in Thousands		12 Months Ended
		Apr. 30, 2018	Apr. 30, 2017	Nov. 21, 2017
Goodwill [Line Items]
Goodwill, Beginning Balance		$ 19,549	$ 18,749
Goodwill, Ending Balance		25,888	19,549
Goodwill, Ending Balance		19,549	18,749
AdapChain Inc
Goodwill [Line Items]
Goodwill related to the Acquisition			800
Halo
Goodwill [Line Items]
Goodwill related to the Acquisition		6,339
Goodwill, Ending Balance				$ 6,339
Supply Chain Management
Goodwill [Line Items]
Goodwill, Beginning Balance	[1]	19,549	18,749
Goodwill, Ending Balance	[1]	25,888	19,549
Goodwill, Ending Balance	[1]	19,549	18,749
Supply Chain Management | AdapChain Inc
Goodwill [Line Items]
Goodwill related to the Acquisition	[1]		$ 800
Supply Chain Management | Halo
Goodwill [Line Items]
Goodwill related to the Acquisition	[1]	$ 6,339

[1] Goodwill related to Logility, Inc., New Generation Computing, Inc., Demand Management, Inc. and their acquisitions.