Long-Term Investments - Schedule of Carrying Value and Ownership Percentage of Investment (Details) - USD ($) $ in Thousands		Dec. 31, 2025	Jun. 30, 2025
Schedule Of Equity And Cost Method Investments [Line Items]
Carrying Value		$ 38,400	$ 32,700
Carrying Value		38,437	33,015
Sunshine Minting, Inc.
Schedule Of Equity And Cost Method Investments [Line Items]
Carrying Value		$ 15,682	$ 17,876
Ownership Percentage		44.90%	44.90%
Company A
Schedule Of Equity And Cost Method Investments [Line Items]
Carrying Value		$ 0	$ 283
Ownership Percentage		0.00%	33.30%
Company B
Schedule Of Equity And Cost Method Investments [Line Items]
Carrying Value		$ 2,270	$ 2,194
Ownership Percentage		50.00%	50.00%
Texas Precious Metals, LLC
Schedule Of Equity And Cost Method Investments [Line Items]
Carrying Value		$ 8,485	$ 7,547
Ownership Percentage		12.00%	12.00%
Atkinsons Bullion & Coins
Schedule Of Equity And Cost Method Investments [Line Items]
Carrying Value	[1]	$ 10,757	$ 3,733
Ownership Percentage	[1]	49.50%	25.00%
Company C
Schedule Of Equity And Cost Method Investments [Line Items]
Carrying Value		$ 56	$ 43
Ownership Percentage		33.30%	33.30%
Company D
Schedule Of Equity And Cost Method Investments [Line Items]
Carrying Value		$ 925	$ 1,009
Ownership Percentage		20.00%	20.00%
Company E
Schedule Of Equity And Cost Method Investments [Line Items]
Carrying Value		$ 262	$ 330
Ownership Percentage		5.00%	5.00%

[1] The Company holds an option, exercisable beginning in December 2027, to acquire additional ownership interest, which would give the Company control of the investee if exercised.