Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise.

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Segment Information - Summary of Revenue from Sales of Uranium Inventory from Major Customer (Details) - USD ($) $ in Thousands	12 Months Ended
	Apr. 30, 2026	Apr. 30, 2025	Apr. 30, 2024
Segment Reporting [Line Items]
Total	$ 186,807	$ 11,213	$ 31,205
Customer A
Segment Reporting [Line Items]
Total	31,630	7,975
Customer B
Segment Reporting [Line Items]
Total	24,245		11,230
Customer C
Segment Reporting [Line Items]
Total	8,100		16,275
Customer D
Segment Reporting [Line Items]
Total	8,725	$ 3,238
Customer E
Segment Reporting [Line Items]
Total	17,000
Customer F
Segment Reporting [Line Items]
Total	37,788
Customer G
Segment Reporting [Line Items]
Total			$ 3,700
All Other Customers
Segment Reporting [Line Items]
Total	$ 59,319