SEGMENT REPORTING AND SALES BY MAJOR CUSTOMER - Narrative (Details)	12 Months Ended
	Apr. 30, 2025	Apr. 30, 2025 segment	Apr. 30, 2025 customer	Apr. 30, 2024 customer
Segment Reporting Information [Line Items]
Number of operating segments	2	2
Customer Concentration Risk | Revenue Benchmark | The Five Aerospace Customers
Segment Reporting Information [Line Items]
Concentration risk, percentage	25.40%			28.50%
Number of major customers			5	5
Customer Concentration Risk | Revenue Benchmark | Top Customer
Segment Reporting Information [Line Items]
Concentration risk, percentage	14.80%			15.20%
Customer Concentration Risk | Revenue Benchmark | Next Top Four Customers | Minimum
Segment Reporting Information [Line Items]
Concentration risk, percentage	2.00%			1.90%
Customer Concentration Risk | Revenue Benchmark | Next Top Four Customers | Maximum
Segment Reporting Information [Line Items]
Concentration risk, percentage	4.00%			5.80%
Customer Concentration Risk | Accounts Receivable | Customer One
Segment Reporting Information [Line Items]
Concentration risk, percentage	32.40%			42.50%
Number of major customers	1			1