Annual report pursuant to Section 13 and 15(d)

Document and Entity Information

v3.19.2
Document and Entity Information - USD ($)
12 Months Ended
Jun. 30, 2019
Sep. 06, 2019
Dec. 31, 2018
Document and Entity Information [Abstract]      
Entity Registrant Name A-Mark Precious Metals, Inc.    
Entity Central Index Key 0001591588    
Current Fiscal Year End Date --06-30    
Entity Filer Category Non-accelerated Filer    
Document Type 10-K    
Document Period End Date Jun. 30, 2019    
Document Fiscal Year Focus 2019    
Document Fiscal Period Focus FY    
Amendment Flag false    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Small Business true    
Entity Emerging Growth Company false    
Entity Shell Company false    
Entity Common Stock, Shares Outstanding   7,031,450  
Entity Public Float     $ 53,900,591