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Segment Information - Operations and Identifiable Assets (Details) $ in Thousands	9 Months Ended	12 Months Ended
	Mar. 31, 2026 USD ($) customer	Jun. 30, 2025 USD ($) customer
Segment Information
Segments assets	$ 2,554,431	$ 2,241,257
Security division | One customer | Accounts receivable | Customer
Segment Information
Number of major customers | customer	1	1
Concentration (as a percent)	40.00%	42.00%
Operating segments | Security division
Segment Information
Segments assets	$ 1,676,393	$ 1,608,985
Operating segments | Optoelectronics and Manufacturing Division
Segment Information
Segments assets	298,898	300,405
Operating segments | Healthcare division
Segment Information
Segments assets	284,204	270,428
Corporate/Eliminations
Segment Information
Segments assets	$ 294,936	$ 61,439

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