Organization, Use of Estimates and Basis of Presentation (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Jan. 31, 2025 USD ($)	Jan. 31, 2024 USD ($)	Jan. 31, 2025 USD ($) subsidiary segment	Jan. 31, 2024 USD ($)
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of operating subsidiaries | subsidiary			4
Number of reportable segments | segment			1
Disaggregation of Revenue [Line Items]
Revenue	$ 17,039	$ 12,019	$ 44,589	$ 36,153
Operating Subsidiaries
Disaggregation of Revenue [Line Items]
Revenue	$ 0	$ 0	$ 0	$ 0