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Organization and Significant Accounting Policies - Contract Estimates (Details)	3 Months Ended		9 Months Ended
	Jan. 25, 2025 USD ($) contract	Jan. 27, 2024 USD ($) contract	Jan. 25, 2025 USD ($) contract	Jan. 27, 2024 USD ($) contract	Apr. 30, 2024 USD ($)
Material adjustment to any one contract	$ 0	$ 0	$ 0	$ 0
Amount of revised aggregate impact of adjustments in contract estimates on revenue related to performance obligations satisfied or partially satisfied in previous periods	$ 9,150,000	$ 4,398,000	$ 9,515,000	$ 5,087,000
Number of active contracts | contract	1	1	1	1
Forward Loss Reserve	$ 230,000		$ 230,000		$ 374,000
LMS
Amount of aggregate impact of adjustments in contract estimates on revenue related to performance obligations satisfied or partially satisfied in previous periods increased	$ 9,629,000	$ 3,574,000	$ 9,870,000	$ 1,439,000

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- Definition

Carrying amount of forward loss reserves as of the balance sheet date, related to unfavorable changes in estimated costs to complete contracts.

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- Definition

Refers to any one adjustment that was material to the contract.

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- Definition

Refers to aggregate impact of adjustments in contract estimates on revenue related to performance obligations satisfied or partially satisfied in previous periods.

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Amount of revised aggregate impact of adjustments in contract estimates on revenue related to performance obligations satisfied or partially satisfied in previous periods

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