Document and Entity Information
Jan. 28, 2020
Cover [Abstract]  
Document Type 8-K
Amendment Flag false
Document Period End Date Jan. 28, 2020
Entity Registrant Name OSI SYSTEMS, INC.
Entity Incorporation, State or Country Code DE
Entity File Number 000-23125
Entity Tax Identification Number 33-0238801
Entity Address, Address Line One 12525 CHADRON AVENUE
Entity Address, City or Town HAWTHORNE
Entity Address, State or Province CA
Entity Address, Postal Zip Code 90250
City Area Code 310
Local Phone Number 978-0516
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Entity Emerging Growth Company false
Entity Central Index Key 0001039065
Title of 12(b) Security Common Stock, $0.001 par value
Trading Symbol OSIS
Security Exchange Name NASDAQ