v3.22.2.2
Document and Entity Information
Sep. 30, 2022
Document and Entity Information [Abstract]  
Document Type 8-K
Document Period End Date Sep. 30, 2022
Entity Registrant Name OMEROS CORPORATION
Entity Central Index Key 0001285819
Entity Incorporation, State or Country Code WA
Entity File Number 001-34475
Entity Tax Identification Number 91-1663741
Entity Address, Address Line One 201 Elliott Avenue West
Entity Address, City or Town Seattle
Entity Address, State or Province WA
Entity Address, Postal Zip Code 98119
City Area Code 206
Local Phone Number 676-5000
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Title of 12(b) Security Common stock, $0.01 par value per share
Trading Symbol OMER
Security Exchange Name NASDAQ
Entity Emerging Growth Company false
Amendment Flag false