Quarterly report pursuant to Section 13 or 15(d)

Document and Entity Information

v3.20.2
Document and Entity Information - shares
1 Months Ended
Sep. 30, 2020
Dec. 07, 2020
Document Information [Line Items]    
Document Type 10-Q  
Document Period End Date Sep. 30, 2020  
Entity Registrant Name ALTIMAR ACQUISITION CORP.  
Entity Current Reporting Status No  
Transition Report false  
Entity Interactive Data Current Yes  
Entity Filer Category Non-accelerated Filer  
Entity Small Business true  
Entity Emerging Growth Company true  
Entity Ex Transition Period false  
Entity Shell Company true  
Entity Central Index Key 0001823945  
Current Fiscal Year End Date --12-31  
Document Fiscal Year Focus 2020  
Document Fiscal Period Focus Q3  
Amendment Flag false  
Class A common stock    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   27,500,000
Trading Symbol ATAC  
Title of 12(b) Security Class A Ordinary Shares included as part of the units  
Security Exchange Name NYSE  
Class B common stock    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   6,875,000
Units, each consisting of one share of Class A common stock and one-third of one redeemable warrant    
Document Information [Line Items]    
Trading Symbol ATACU  
Title of 12(b) Security Units, each consisting of one Class A Ordinary Share, $0.0001 par value, and one-third of one redeemable warrant  
Security Exchange Name NYSE  
Redeemable warrants, each whole warrant exercisable    
Document Information [Line Items]    
Trading Symbol ATACW  
Title of 12(b) Security Redeemable warrants included as part of the units, each whole warrant exercisable for one Class A Ordinary Share at an exercise price of $11.50  
Security Exchange Name NYSE