XML 13 R1.htm IDEA: XBRL DOCUMENT v3.20.4
Document and Entity Information - USD ($)
$ in Billions
 12 Months Ended
Dec. 31, 2020
Feb. 05, 2021
Jun. 30, 2020
Cover [Abstract]      
Document Type 10-K    
Amendment Flag false    
Document Period End Date Dec. 31, 2020    
Document Fiscal Year Focus 2020    
Document Fiscal Period Focus FY    
Trading Symbol HRTX    
Entity Registrant Name HERON THERAPEUTICS, INC. /DE/    
Entity Central Index Key 0000818033    
Current Fiscal Year End Date --12-31    
Entity Current Reporting Status Yes    
Entity Voluntary Filers No    
Entity Filer Category Large Accelerated Filer    
Entity Well-known Seasoned Issuer Yes    
Entity Common Stock, Shares Outstanding   91,396,509  
Entity Small Business false    
Entity Emerging Growth Company false    
ICFR Auditor Attestation Flag true    
Entity Shell Company false    
Entity File Number 001-33221    
Entity Tax Identification Number 94-2875566    
Entity Address, Address Line One 4242 CAMPUS POINT COURT    
Entity Address, Address Line Two SUITE 200    
Entity Address, City or Town SAN DIEGO    
Entity Address, State or Province CA    
Entity Address, Postal Zip Code 92121    
City Area Code 858    
Local Phone Number 251-4400    
Entity Interactive Data Current Yes    
Entity Incorporation, State or Country Code DE    
Document Annual Report true    
Entity Public Float     $ 1.3
Document Transition Report false    
Title of 12(b) Security Common Stock, par value $0.01 per share    
Security Exchange Name NASDAQ    
Documents Incorporated by Reference

Portions of the registrant’s Definitive Proxy Statement related to its 2021 Annual Meeting of Stockholders’ to be held on or about June 17, 2021 are incorporated by reference into Part III of this Annual Report on Form 10-K. Such Definitive Proxy Statement will be filed with the U.S. Securities and Exchange Commission within 120 days after the end of the fiscal year to which this report relates. Except as expressly incorporated by reference, the registrant’s Definitive Proxy Statement shall not be deemed to be part of this report.