Deferred Consideration—Gold Payments (Details) $ / shares in Units, shares in Thousands, $ in Thousands	May 10, 2023 USD ($) $ / shares shares	Mar. 31, 2024 oz
ETFS Capital [Member]
Deferred Consideration [Line Items]
Deferred consideration (in Ounces) | oz		9,500,000
Contractual gold payments [Member]
Deferred Consideration [Line Items]
Deferred consideration (in Ounces) | oz		6,333,000
SPA Agreement [Member]
Deferred Consideration [Line Items]
Aggregate consideration	$ 136,903
Series C Redeemable Convertible Preferred Stock [Member]
Deferred Consideration [Line Items]
Preferred stock shares issued (in Shares) | shares	13,087
Conversion of stock shares converted (in Shares) | shares	13,087,000
Series C Redeemable Convertible Preferred Stock [Member] | ETFS Capital [Member]
Deferred Consideration [Line Items]
Preferred stock par value (in Dollars per share) | $ / shares	$ 0.01
Series C Redeemable Convertible Preferred Stock [Member] | ETFS Capital [Member] | Gold Bullion Holdings [Member]
Deferred Consideration [Line Items]
Cash	$ 4,371
Series C Redeemable Convertible Preferred Stock [Member] | ETFS Capital [Member] | Rodber Investments Limited [Member]
Deferred Consideration [Line Items]
Cash	$ 45,634