Annual report [Section 13 and 15(d), not S-K Item 405]

Long-Term Investments - Schedule of Carrying Value and Ownership Percentage of Investment (Details)

v3.25.2
Long-Term Investments - Schedule of Carrying Value and Ownership Percentage of Investment (Details) - USD ($)
$ in Thousands
Jun. 30, 2025
Apr. 30, 2025
Jun. 30, 2024
Schedule Of Equity And Cost Method Investments [Line Items]      
Carrying Value $ 32,700   $ 50,200
Carrying Value 33,015   50,458
Pinehurst Coin Exchange, Inc.      
Schedule Of Equity And Cost Method Investments [Line Items]      
Carrying Value $ 0   $ 17,503
Ownership Percentage 0.00% [1]   49.00%
Sunshine Minting, Inc.      
Schedule Of Equity And Cost Method Investments [Line Items]      
Carrying Value $ 17,876   $ 18,603
Ownership Percentage 44.90%   44.90%
Company A      
Schedule Of Equity And Cost Method Investments [Line Items]      
Carrying Value $ 283   $ 283
Ownership Percentage 33.30%   33.30%
Company B      
Schedule Of Equity And Cost Method Investments [Line Items]      
Carrying Value $ 2,194   $ 2,036
Ownership Percentage 50.00%   50.00%
Texas Precious Metals, LLC      
Schedule Of Equity And Cost Method Investments [Line Items]      
Carrying Value $ 7,547   $ 7,236
Ownership Percentage 12.00%   12.00%
Atkinsons Bullion & Coins      
Schedule Of Equity And Cost Method Investments [Line Items]      
Carrying Value $ 3,733   $ 2,783
Ownership Percentage 25.00%   25.00%
APS Investment, LLC      
Schedule Of Equity And Cost Method Investments [Line Items]      
Carrying Value [2] $ 0   $ 2,014
Ownership Percentage [2] 0.00%   33.30%
AMS Holding, LLC      
Schedule Of Equity And Cost Method Investments [Line Items]      
Ownership Percentage   90.00%  
Company C      
Schedule Of Equity And Cost Method Investments [Line Items]      
Carrying Value $ 43   $ 0
Ownership Percentage 33.30%   0.00%
Company D      
Schedule Of Equity And Cost Method Investments [Line Items]      
Carrying Value $ 1,009   $ 0
Ownership Percentage 20.00%   0.00%
Company E      
Schedule Of Equity And Cost Method Investments [Line Items]      
Carrying Value $ 330   $ 0
Ownership Percentage 5.00%   0.00%
[1] In February 2025, the Company acquired the remaining outstanding equity interests of Pinehurst; see Note 1 for further information.
[2] APS Investment, LLC is a holding company that as of June 30, 2024 owned a 10% equity interest in AMS Holding, LLC. A-Mark, Pinehurst Coin Exchange, Inc. and Stack's Bowers Galleries each own a one-third equity interest in APS Investment, LLC. In February 2025, the Company acquired both SGI, the parent of Stack's Bowers Galleries, and Pinehurst; as a result, the Company owned 100% of APS Investment, LLC. In April 2025, the Company acquired the remaining 90% of AMS Holding, LLC it did not previously own.