Quarterly report pursuant to Section 13 or 15(d)

Document and Entity Information

v3.10.0.1
Document and Entity Information - shares
3 Months Ended
Dec. 31, 2018
Feb. 08, 2019
Document And Entity Information    
Entity Registrant Name GEE Group Inc.  
Entity Central Index Key 0000040570  
Document Type 10-Q  
Document Period End Date Dec. 31, 2018  
Amendment Flag false  
Current Fiscal Year End Date --09-30  
Is Entity's Reporting Status Current Yes  
Entity Filer Category Non-accelerated Filer  
Entity Common Stock, Shares Outstanding   11,720,967
Document Fiscal Period Focus Q1  
Document Fiscal Year Focus 2019  
Entity Emerging Growth Company false  
Entity Small Business true  
Entity Ex Transition Period false