Annual report pursuant to Section 13 and 15(d)

Description of Business - Schedule of Business Acquisitions, Purchase Price and Fair values of Assets Acquired and Liabilities Assumed (Details)

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Description of Business - Schedule of Business Acquisitions, Purchase Price and Fair values of Assets Acquired and Liabilities Assumed (Details) - USD ($)
$ in Thousands
Jun. 21, 2024
Feb. 26, 2024
Jun. 30, 2024
Jun. 30, 2023
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities [Abstract]        
Goodwill     $ 199,937 $ 100,943
LPM Group Limited [Member]        
Business Combination, Consideration Transferred [Abstract]        
Cash   $ 37,506    
Contingent consideration   2,800    
Common stock   3,514    
Settlement of pre-existing payables due to A-Mark   398    
Total purchase price   44,218    
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets [Abstract]        
Cash   5,033    
Receivables, net   4,105    
Inventories   16,807    
Other current assets   515    
Property, plant, and equipment, net   1,306    
Other long-term assets   956    
Total identifiable assets acquired   39,022    
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities [Abstract]        
Accounts payable and other payables   (526)    
Deferred revenue and other advances   (11,361)    
Accrued liabilities   (1,729)    
Other liabilities   (2,222)    
Net identifiable assets acquired   23,184    
Goodwill   21,034    
Total purchase price   44,218    
LPM Group Limited [Member] | Existing Customer Relationships [Member]        
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets [Abstract]        
Intangible assets   6,800    
LPM Group Limited [Member] | Trade Names [Member]        
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets [Abstract]        
Trade names   $ 3,500    
SGB        
Business Combination, Consideration Transferred [Abstract]        
Cash $ 9,600      
Option to acquire additional equity interest 2,300      
Noncontrolling interests 50,652      
Pre-existing equity method investment 56,848      
Settlement of pre-existing payables due to A-Mark 9,418      
Total purchase price 128,818      
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets [Abstract]        
Cash 10,203      
Receivables, net 10,968      
Inventories 45,936      
Other current assets 2,246      
Property, plant, and equipment, net 2,071      
Other long-term assets 5,809      
Total identifiable assets acquired 106,045      
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities [Abstract]        
Product financing arrangements (24,372)      
Accounts payable and other payables (7,205)      
Deferred revenue and other advances (5,085)      
Accrued liabilities (1,231)      
Notes payable (8,367)      
Deferred tax liability (6,624)      
Other liabilities (2,303)      
Net identifiable assets acquired 50,858      
Goodwill 77,960   $ 78,000  
Total purchase price 128,818      
SGB | Existing Customer Relationships [Member]        
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets [Abstract]        
Intangible assets 13,000      
SGB | Developed Technology        
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets [Abstract]        
Intangible assets 9,300      
SGB | Trade Names [Member]        
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets [Abstract]        
Trade names $ 6,512