Summary of Accounting Policies (Details) - Revenue from External Customers by Products and Services - USD ($) $ in Thousands	12 Months Ended
Apr. 30, 2023	Apr. 30, 2022
Revenue from External Customer [Line Items]
Revenue	$ 40,777	$ 48,296
Satellite Revenue [Member]
Revenue from External Customer [Line Items]
Revenue	17,918	26,092
Government Non-Space Revenue [Member]
Revenue from External Customer [Line Items]
Revenue	20,282	19,593
Other Commercial & Industrial Revenue [Member]
Revenue from External Customer [Line Items]
Revenue	$ 2,577	$ 2,611

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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+ Details