Quarterly report [Sections 13 or 15(d)]

Description of Business - Additional Information (Details)

v3.25.1
Description of Business - Additional Information (Details)
$ in Thousands
1 Months Ended 3 Months Ended 9 Months Ended
Jan. 31, 2025
USD ($)
Feb. 28, 2025
USD ($)
shares
Sep. 30, 2024
USD ($)
Jun. 30, 2024
USD ($)
Jun. 30, 2022
Mar. 31, 2025
USD ($)
shares
Mar. 31, 2025
USD ($)
Coin
Reportable_segments
Product
Mar. 31, 2024
USD ($)
Feb. 26, 2024
USD ($)
Dec. 31, 2021
Mar. 31, 2021
USD ($)
Dec. 31, 2019
Aug. 31, 2017
USD ($)
Description Of Business [Line Items]                          
Number of reportable segments | Reportable_segments             3            
Number of coins and bar products | Coin             2,100            
Dividend paid             $ 13,883 $ 37,265          
Goodwill       $ 199,937   $ 216,917 216,917            
Noncontrolling ownership interest acquisition           $ 408              
Common Stock                          
Description Of Business [Line Items]                          
Shares issued for acquisition | shares           423,234              
LPM Group Limited                          
Description Of Business [Line Items]                          
Business acquisition, contingent consideration           $ 1,300 $ 1,300   $ 2,800        
Goodwill                 $ 21,000        
Silver Gold Bull, Inc.                          
Description Of Business [Line Items]                          
Cash consideration       $ 9,600                  
Business acquisition, option to purchase additional percentage of the outstanding equity       8.00% 27.60%                
Dividends declared       $ 15,900                  
Ownership interest percentage after transaction       55.40% 47.40%                
Goodwill       $ 78,000                  
Silver Gold Bull, Inc. | SGB Shareholders                          
Description Of Business [Line Items]                          
Dividend paid     $ 7,500                    
JMB                          
Description Of Business [Line Items]                          
Number of products | Product             6,200            
Goodwill                     $ 92,100    
Goldline, LLC                          
Description Of Business [Line Items]                          
Goodwill                         $ 1,400
SGI                          
Description Of Business [Line Items]                          
Business acquisition, percentage of interests acquired   100.00%                      
Cash consideration   $ 46,000                      
Consideration to acquire   103,280                      
Repayment of debt obligations   11,017                      
Settlement of pre-existing payables due to A-Mark   $ 419                      
Shares issued for acquisition | shares   1,181,548                      
Business acquisition, transaction costs   $ 2,000                      
Hold-back consideration - common stock   1,818                      
Goodwill   14,478                      
Noncontrolling ownership interest acquisition   $ 408                      
SGI | Indemnification Obligations                          
Description Of Business [Line Items]                          
Business acquisition, consideration in shares | shares   66,872                      
Hold-back consideration - common stock   $ 1,800                      
Accrued liabilities and other liabilities           1,700 $ 1,700            
SGI | Common Stock                          
Description Of Business [Line Items]                          
Business acquisition, consideration in shares | shares   1,671,654                      
SGI | Customer Relationships                          
Description Of Business [Line Items]                          
Weighted average useful life   5 years                      
SGI | Developed Technology                          
Description Of Business [Line Items]                          
Weighted average useful life   4 years                      
Pinehurst Coin Exchange, Inc.                          
Description Of Business [Line Items]                          
Ownership percentage acquired   51.00%                   10.00%  
Ownership percentage after incremental investment 49.00%                 49.00%      
Cash consideration   $ 6,500                      
Fair value of ownership interest held $ 6,900 6,933                      
Consideration to acquire   26,711                      
Repayment of debt obligations   16,903                      
Settlement of pre-existing receivables due from A-Mark   4,325                      
Business acquisition, transaction costs   200                      
Business acquisition, contingent consideration   700       $ 700 $ 700            
Goodwill   2,502                      
Contingent consideration upon achievement of certain performance benchmarks   5,300                      
Remeasurement loss on pre-existing equity interest   7,000                      
Pinehurst Coin Exchange, Inc. | Promissory Notes                          
Description Of Business [Line Items]                          
Notes issued for business combination   $ 3,100                      
Pinehurst Coin Exchange, Inc. | Customer Relationships                          
Description Of Business [Line Items]                          
Weighted average useful life   4 years                      
Maximum | Silver Gold Bull, Inc.                          
Description Of Business [Line Items]                          
Business acquisition, percentage of interests acquired       70.00% 75.00%                
Precious Metals Purchasing Partners, LLC | Silver Gold Bull, Inc.                          
Description Of Business [Line Items]                          
Percentage of ownership percentage             50.00%            
Precious Metals Purchasing Partners, LLC | Goldline, LLC                          
Description Of Business [Line Items]                          
Percentage of ownership percentage             50.00%            
Collectible Card Partners, LLC                          
Description Of Business [Line Items]                          
Percentage of ownership percentage             50.00%