Segment Information - By industry segment (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2025 USD ($)	Dec. 31, 2024 USD ($)	Dec. 31, 2025 USD ($) segment	Dec. 31, 2024 USD ($)
Segment Information
Number of identifiable industry segments \| segment			3
Number of reporting segments \| segment			3
Total revenues	$ 464,057	$ 419,820	$ 848,680	$ 763,827
Cost of goods sold	312,428	272,669	573,866	495,174
Selling, general and administrative expenses	70,201	70,722	137,156	142,945
Research and development expenses	19,759	18,257	40,186	36,030
Segment income (loss) from operations	61,669	58,172	97,472	89,678
Impairment, restructuring and other charges	2,874	215	5,604	1,393
Income (loss) from operations	58,795	57,957	91,868	88,285
Capital expenditures	6,685	5,490	13,713	13,195
Depreciation and amortization	9,606	10,647	19,866	22,097
Security Division
Segment Information
Total revenues	334,705	289,987	588,953	514,301
Impairment, restructuring and other charges				479
Optoelectronics and Manufacturing Division
Segment Information
Total revenues	92,818	84,979	182,450	167,570
Impairment, restructuring and other charges				547
Healthcare Division
Segment Information
Total revenues	36,534	44,854	77,277	81,956
Impairment, restructuring and other charges				152
Operating segments \| Security Division
Segment Information
Total revenues	334,705	289,987	588,953	514,301
Cost of goods sold	226,159	184,853	399,504	327,153
Selling, general and administrative expenses	38,058	38,208	74,167	78,622
Research and development expenses	13,730	12,873	27,558	25,138
Segment income (loss) from operations	56,758	54,053	87,724	83,388
Impairment, restructuring and other charges	1,297		3,654	479
Income (loss) from operations	55,461	54,053	84,070	82,909
Capital expenditures	4,189	3,688	7,750	9,158
Depreciation and amortization	6,322	6,904	13,250	14,739
Operating segments \| Optoelectronics and Manufacturing Division
Segment Information
Total revenues	112,552	100,743	222,013	198,538
Cost of goods sold	88,354	79,256	174,868	155,995
Selling, general and administrative expenses	8,755	7,895	17,712	16,501
Research and development expenses	1,276	1,310	2,513	2,604
Segment income (loss) from operations	14,167	12,282	26,920	23,438
Impairment, restructuring and other charges	234		261	547
Income (loss) from operations	13,933	12,282	26,659	22,891
Capital expenditures	1,799	1,009	3,394	2,065
Depreciation and amortization	1,720	1,939	3,401	3,884
Operating segments \| Healthcare Division
Segment Information
Total revenues	36,534	44,854	77,277	81,956
Cost of goods sold	17,738	23,895	37,881	42,138
Selling, general and administrative expenses	13,783	15,163	26,843	28,856
Research and development expenses	4,753	4,074	10,115	8,288
Segment income (loss) from operations	260	1,722	2,438	2,674
Impairment, restructuring and other charges	1,357		1,689	152
Income (loss) from operations	(1,097)	1,722	749	2,522
Capital expenditures	329	175	1,536	558
Depreciation and amortization	1,070	1,406	2,236	2,676
Intersegment revenue elimination
Segment Information
Total revenues	(19,734)	(15,764)	(39,563)	(30,968)
Intersegment revenue elimination \| Optoelectronics and Manufacturing Division
Segment Information
Total revenues	19,734	15,764	39,563	30,968
Corporate/Eliminations
Segment Information
Total revenues	(19,734)	(15,764)	(39,563)	(30,968)
Cost of goods sold	(19,823)	(15,335)	(38,387)	(30,112)
Selling, general and administrative expenses	9,605	9,456	18,434	18,966
Segment income (loss) from operations	(9,516)	(9,885)	(19,610)	(19,822)
Impairment, restructuring and other charges	(14)	215		215
Income (loss) from operations	(9,502)	(10,100)	(19,610)	(20,037)
Capital expenditures	368	618	1,033	1,414
Depreciation and amortization	$ 494	$ 398	$ 979	$ 798

OSI SYSTEMS INC 10-Q