XML 12 R1.htm IDEA: XBRL DOCUMENT v3.25.3
Cover - shares
shares in Millions
 9 Months Ended
Sep. 30, 2025
Oct. 30, 2025
Cover [Abstract]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Sep. 30, 2025  
Document Transition Report false  
Entity File Number 001-41026  
Entity Registrant Name BACKBLAZE, INC.  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 20-8893125  
Entity Address, Address Line One 201 Baldwin Ave.  
Entity Address, City or Town San Mateo  
Entity Address, State or Province CA  
Entity Address, Postal Zip Code 94401  
City Area Code 650  
Local Phone Number 352-3738  
Title of 12(b) Security Class A Common Stock, $0.0001 par value per share  
Trading Symbol BLZE  
Security Exchange Name NASDAQ  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company true  
Entity Ex Transition Period false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   57.7
Entity Central Index Key 0001462056  
Current Fiscal Year End Date --12-31  
Document Fiscal Year Focus 2025  
Document Fiscal Period Focus Q3  
Amendment Flag false