Quarterly report pursuant to Section 13 or 15(d)

Document and Entity Information

v3.6.0.2
Document and Entity Information - shares
6 Months Ended
Dec. 31, 2016
Feb. 04, 2017
Document and Entity Information [Abstract]    
Entity Registrant Name A-Mark Precious Metals, Inc.  
Entity Central Index Key 0001591588  
Trading Symbol AMRK  
Current Fiscal Year End Date --06-30  
Entity Filer Category Smaller Reporting Company  
Document Type 10-Q  
Document Period End Date Dec. 31, 2016  
Document Fiscal Year Focus 2017  
Document Fiscal Period Focus Q2  
Amendment Flag false  
Entity Common Stock, Shares Outstanding   7,031,450