v3.19.2
Cover - shares
6 Months Ended
Jun. 30, 2019
Jul. 31, 2019
Cover page.    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Jun. 30, 2019  
Document Transition Report false  
Entity File Number 001-35108  
Entity Registrant Name SERVICESOURCE INTERNATIONAL, INC.  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 81-0578975  
Entity Address, Address Line One 707 17th Street,  
Entity Address, Address Line Two 25th Floor  
Entity Address, City or Town Denver,  
Entity Address, State or Province CO  
Entity Address, Postal Zip Code 80202  
City Area Code (720)  
Local Phone Number 889-8500  
Title of 12(b) Security Common Stock, $0.0001 Par Value  
Trading Symbol SREV  
Security Exchange Name NASDAQ  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Accelerated Filer  
Small Business false  
Emerging Growth Company false  
Entity Shell Company false  
Entity Common stock, shares outstanding   94,082,381
Amendment Flag false  
Document Fiscal Year Focus 2019  
Document Fiscal Period Focus Q2  
Entity Central Index Key 0001310114  
Current Fiscal Year End Date --12-31