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Segment Information - Operations and Identifiable Assets (Details) $ in Thousands	3 Months Ended		12 Months Ended
	Sep. 30, 2025 USD ($) customer	Sep. 30, 2024 customer	Jun. 30, 2025 USD ($) customer
Segment Information
Segments assets	$ 2,299,156		$ 2,241,257
Security division | One customer | Net revenues | Customer
Segment Information
Number of major customers | customer		1
Concentration (as a percent)		14.00%
Security division | One customer | Accounts receivable, net | Customer
Segment Information
Number of major customers | customer	1		1
Concentration (as a percent)	44.00%		42.00%
Operating segments | Security division
Segment Information
Segments assets	$ 1,637,446		$ 1,608,985
Operating segments | Optoelectronics and Manufacturing Division
Segment Information
Segments assets	290,831		300,405
Operating segments | Healthcare division
Segment Information
Segments assets	270,883		270,428
Intersegment revenue elimination
Segment Information
Segments assets	$ 99,996		$ 61,439

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