Presentation and Summary of Significant Accounting Policies - Intangible Assets Including Acquisition-Related Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Apr. 30, 2023	Apr. 30, 2022
Finite-lived Intangible Assets [Roll Forward]
Beginning balance	$ 147	$ 360
Amortization expense	(834)	(213)
Intangibles related to the Starboard Acquisition	2,830
Ending balance	2,143	147
Supply Chain Management
Finite-lived Intangible Assets [Roll Forward]
Beginning balance	147	360
Amortization expense	(834)	(213)
Intangibles related to the Starboard Acquisition	2,830
Ending balance	2,143	147
IT Consulting
Finite-lived Intangible Assets [Roll Forward]
Beginning balance	0	0
Amortization expense	0	0
Intangibles related to the Starboard Acquisition	0
Ending balance	0	0
Other
Finite-lived Intangible Assets [Roll Forward]
Beginning balance	0	0
Amortization expense	0	0
Intangibles related to the Starboard Acquisition	0
Ending balance	$ 0	$ 0