CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended	9 Months Ended
Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023
Net revenues:
Total net revenues	$ 405,406	$ 302,889	$ 1,057,851	$ 866,557
Cost of goods sold:
Total cost of goods sold	269,311	199,103	681,710	579,067
Gross profit	136,095	103,786	376,141	287,490
Operating expenses:
Selling, general and administrative	66,584	53,707	197,986	161,148
Research and development	17,144	14,852	49,416	43,848
Restructuring and other charges, net	1,004	890	2,496	4,366
Total operating expenses	84,732	69,449	249,898	209,362
Income from operations	51,363	34,337	126,243	78,128
Interest and other expense, net	(7,407)	(5,727)	(19,689)	(14,339)
Income before income taxes	43,956	28,610	106,554	63,789
Provision for income taxes	(9,913)	(6,802)	(23,079)	(14,392)
Net income	$ 34,043	$ 21,808	$ 83,475	$ 49,397
Earnings per share:
Basic	$ 2.00	$ 1.30	$ 4.92	$ 2.93
Diluted	$ 1.95	$ 1.27	$ 4.82	$ 2.88
Shares used in per share calculation:
Basic	17,042	16,809	16,954	16,858
Diluted	17,425	17,184	17,301	17,151
Products
Net revenues:
Total net revenues	$ 327,360	$ 223,724	$ 817,248	$ 637,563
Cost of goods sold:
Total cost of goods sold	223,570	156,534	547,938	458,197
Services
Net revenues:
Total net revenues	78,046	79,165	240,603	228,994
Cost of goods sold:
Total cost of goods sold	$ 45,741	$ 42,569	$ 133,772	$ 120,870

The amount of cost of borrowed funds accounted for as interest, other interest income and other interest expense.

No definition available.

Name:	osis_InterestAndOtherExpenseNet
Namespace Prefix:	osis_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities.