A-Mark Precious Metals, Inc. Quarterly report pursuant to Section 13 or 15(d)

Derivative Instruments and Hedging Transactions - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2022	Dec. 31, 2021
Derivative [Line Items]
Derivative open positions expected settlement period			2 days
Unrealized gains on foreign exchange	$ 1	$ 231	$ 215	$ 7
Future contracts
Derivative [Line Items]
Derivative open positions expected settlement period			30 days
Maximum \| Forward contracts
Derivative [Line Items]
Derivative open positions expected settlement period			6 months