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Organization and Significant Accounting Policies - Intangible Assets (Details) - USD ($)	3 Months Ended		12 Months Ended
	Apr. 30, 2025	Apr. 30, 2023	Apr. 30, 2025	Apr. 30, 2024	Apr. 30, 2023
Intangibles, net
Amortization expense			$ 23,391,000	$ 17,954,000	$ 58,121,000
MUAS
Intangibles, net
Amortization expense		$ 34,149,000
UGV
Intangibles, net
Amortization expense	$ 4,258,000
Backlog
Intangibles, net
Weighted average amortization period	1 year		1 year
Licenses
Intangibles, net
Weighted average amortization period	3 years		3 years
Customer relationships
Intangibles, net
Amortization expense					$ 34,149,000
In-process research and development
Intangibles, net
Weighted average amortization period	3 years		3 years
Trademarks and tradenames
Intangibles, net
Weighted average amortization period	6 years		6 years
Minimum | Technology
Intangibles, net
Weighted average amortization period	3 years		3 years
Minimum | Customer relationships
Intangibles, net
Weighted average amortization period	3 years		3 years
Maximum | Technology
Intangibles, net
Weighted average amortization period	12 years		12 years
Maximum | Customer relationships
Intangibles, net
Weighted average amortization period	5 years		5 years

X

- Definition

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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