XML 51 R1.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
Document and Entity Information - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2019
Feb. 10, 2020
Jun. 28, 2019
Cover [Abstract]      
Document Type 10-K    
Amendment Flag false    
Document Period End Date Dec. 31, 2019    
Document Fiscal Year Focus 2019    
Document Fiscal Period Focus FY    
Trading Symbol CERS    
Entity Registrant Name CERUS CORP    
Entity Central Index Key 0001020214    
Current Fiscal Year End Date --12-31    
Entity Well-known Seasoned Issuer Yes    
Entity Current Reporting Status Yes    
Entity Voluntary Filers No    
Entity Filer Category Large Accelerated Filer    
Entity Shell Company false    
Entity Small Business false    
Entity Emerging Growth Company false    
Entity Common Stock, Shares Outstanding   162,165,720  
Entity Public Float     $ 771
Title of 12(b) Security Common Stock    
Security Exchange Name NASDAQ    
Document Annual Report true    
Document Transition Report false    
Entity Interactive Data Current Yes    
Entity File Number 000-21937    
Entity Tax Identification Number 68-0262011    
Entity Incorporation, State or Country Code DE    
Entity Address, Address Line One 1220 Concord Avenue    
Entity Address, Address Line Two Suite 600    
Entity Address, City or Town Concord    
Entity Address, State or Province CA    
Entity Address, Postal Zip Code 94520    
City Area Code 925    
Local Phone Number 288-6000    
Documents Incorporated by Reference

DOCUMENTS INCORPORATED BY REFERENCE

Portions of the registrant’s definitive proxy statement in connection with the registrant’s 2020 Annual Meeting of Stockholders, to be filed with the Securities and Exchange Commission pursuant to Regulation 14A not later than 120 days after the end of the fiscal year ended December 31, 2019, are incorporated by reference into Part III of this Annual Report on Form 10-K.