Document and Entity Information
Document and Entity Information - USD ($) | 12 Months Ended | ||
Dec. 31, 2022 | Apr. 18, 2023 | Jun. 30, 2022 | |
Document and Entity Information [Abstract] | |||
Document Type | 10-K/A | ||
Document Annual Report | true | ||
Document Transition Report | false | ||
Document Period End Date | Dec. 31, 2022 | ||
Entity File Number | 001-34475 | ||
Entity Registrant Name | OMEROS CORPORATION | ||
Entity Incorporation, State or Country Code | WA | ||
Entity Tax Identification Number | 91-1663741 | ||
Entity Address State Or Province | WA | ||
Entity Address, Address Line One | 201 Elliott Avenue West | ||
Entity Address, City or Town | Seattle | ||
Entity Address, Postal Zip Code | 98119 | ||
City Area Code | 206 | ||
Local Phone Number | 676-5000 | ||
Title of 12(b) Security | Common Stock | ||
Trading Symbol | OMER | ||
Security Exchange Name | NASDAQ | ||
Entity Well-known Seasoned Issuer | No | ||
Entity Voluntary Filers | No | ||
Entity Current Reporting Status | Yes | ||
Entity Interactive Data Current | Yes | ||
Entity Filer Category | Accelerated Filer | ||
Entity Small Business | true | ||
Entity Emerging Growth Company | false | ||
Entity Shell Company | false | ||
Entity Public Float | $ 165,588,454 | ||
Entity Common Stock, Shares Outstanding | 62,828,765 | ||
Entity Central Index Key | 0001285819 | ||
Current Fiscal Year End Date | --12-31 | ||
Document Fiscal Year Focus | 2022 | ||
Document Fiscal Period Focus | FY | ||
Amendment Flag | false | ||
ICFR Auditor Attestation Flag | true | ||
Auditor Name | Ernst & Young LLP | ||
Auditor Location | Seattle, Washington | ||
Auditor Firm ID | 42 |