A-Mark Precious Metals, Inc. Quarterly report [Sections 13 or 15(d)]

Quarterly report [Sections 13 or 15(d)]

Cover
- Document and Entity Information
Financial Statements
Notes to Financial Statements
Accounting Policies
- Summary of Significant Accounting Policies (Policies)
Notes Tables
Notes Details

Description of Business - Additional Information (Details)

v3.25.3

Description of Business - Additional Information (Details) $ in Millions		1 Months Ended			3 Months Ended
	Jul. 03, 2025 USD ($)	Sep. 30, 2024 USD ($)	Jun. 30, 2024 USD ($)	Jun. 30, 2022	Sep. 30, 2025 Reportable_segments Product Coin	Apr. 01, 2025	Feb. 28, 2025	Feb. 29, 2024	Dec. 31, 2021	Dec. 31, 2019
Description Of Business [Line Items]
Number of reportable segments \| Reportable_segments					3
Dividends declared paid	$ 4.9
Silver Gold Bull, Inc.
Description Of Business [Line Items]
Business acquisition, percentage of interests acquired				75.00%
Cash consideration			$ 9.6
Business acquisition, option to purchase additional percentage of the outstanding equity			8.00%	27.60%
Dividends declared paid			$ 15.9
Ownership interest percentage after transaction			55.40%	47.40%
Silver Gold Bull, Inc. \| SGB Shareholders
Description Of Business [Line Items]
Dividends declared paid		$ 7.5
JMB
Description Of Business [Line Items]
Number of products \| Product					7,000
Pinehurst Coin Exchange, Inc.
Description Of Business [Line Items]
Ownership percentage acquired							51.00%			10.00%
Ownership percentage after incremental investment									49.00%
AMS Holding, LLC
Description Of Business [Line Items]
Business acquisition, percentage of interests acquired						90.00%		10.00%
Minimum
Description Of Business [Line Items]
Number of coins and bar products \| Coin					2,000
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%

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