Annual report pursuant to Section 13 and 15(d)

Document And Entity Information

v3.6.0.2
Document And Entity Information - USD ($)
12 Months Ended
Dec. 31, 2016
Mar. 06, 2017
Jun. 30, 2016
Document Information [Line Items]      
Document Type 10-K    
Amendment Flag false    
Document Period End Date Dec. 31, 2016    
Document Fiscal Year Focus 2016    
Document Fiscal Period Focus FY    
Entity Registrant Name Checkpoint Therapeutics, Inc.    
Entity Central Index Key 0001651407    
Current Fiscal Year End Date --12-31    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Filer Category Non-accelerated Filer    
Entity Public Float     $ 0
Common Class A [Member]      
Document Information [Line Items]      
Entity Common Stock, Shares Outstanding   7,000,000  
Common Stock [Member]      
Document Information [Line Items]      
Entity Common Stock, Shares Outstanding   17,476,876