v3.22.2.2
Document and Entity Information
Sep. 09, 2022
Cover [Abstract]  
Entity Registrant Name SPECTRUM PHARMACEUTICALS INC
Amendment Flag false
Entity Central Index Key 0000831547
Document Type 8-K
Document Period End Date Sep. 09, 2022
Entity Incorporation State Country Code DE
Entity File Number 001-35006
Entity Tax Identification Number 93-0979187
Entity Address, Address Line One Pilot House - Lewis Wharf
Entity Address, Address Line Two Atlantic Avenue
Entity Address, Address Line Three 6th Floor
Entity Address, City or Town Boston
Entity Address, State or Province MA
Entity Address, Postal Zip Code 02110
City Area Code (617)
Local Phone Number 586-3900
Written Communications false
Soliciting Material false
Pre Commencement Tender Offer false
Pre Commencement Issuer Tender Offer false
Security 12b Title Common Stock, $0.001 par value
Trading Symbol SPPI
Security Exchange Name NASDAQ
Entity Emerging Growth Company false