Quarterly report pursuant to Section 13 or 15(d)

Document And Entity Information

Document And Entity Information - shares
6 Months Ended
Jun. 30, 2021
Aug. 09, 2021
Document Information [Line Items]    
Entity Central Index Key 0001337013  
Entity Registrant Name InfuSystem Holdings, Inc  
Amendment Flag false  
Current Fiscal Year End Date --12-31  
Document Fiscal Period Focus Q2  
Document Fiscal Year Focus 2021  
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Jun. 30, 2021  
Document Transition Report false  
Entity File Number 001-35020  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 20-3341405  
Entity Address, Address Line One 3851 West Hamlin Road  
Entity Address, City or Town Rochester Hills  
Entity Address, State or Province MI  
Entity Address, Postal Zip Code 48309  
City Area Code 248  
Local Phone Number 291-1210  
Title of 12(b) Security Common Stock, par value $0.0001 per share  
Trading Symbol INFU  
Security Exchange Name NYSEAMER  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Non-accelerated Filer  
Entity Small Business true  
Entity Emerging Growth Company false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   20,568,489