COMMITMENTS AND CONTINGENCIES - Prepayment agreement (Details) - USD ($)		3 Months Ended								12 Months Ended
	Jan. 01, 2025	Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Other Commitments
Revenue		$ 33,523,000	$ 52,250,000	$ 47,476,000	$ 41,228,000	$ 58,680,000	$ 38,404,000	$ 34,395,000	$ 34,752,000	$ 174,477,000	$ 166,231,000	$ 110,417,000
Auramet International LLC ("Auramet")
Other Commitments
Revenue										56,869,000	136,911,000	$ 50,580,000
Auramet International LLC ("Auramet") | Prepayment Agreement | Guarantee Obligation
Other Commitments
Net proceeds from sales on a Supplier Advance Basis										8,400,000	127,000,000
Revenue											$ 132,700,000
Auramet International LLC ("Auramet") | Prepayment Agreement | Guarantee Obligation | Subsequent events
Other Commitments
Duration of the extension of precious metals purchase agreement (in years)	1 year
Auramet International LLC ("Auramet") | Prepayment Agreement | Guarantee Obligation | Precious metal
Other Commitments
Revenue from sales on a Supplier Advance Basis										4,900,000
Remaining net proceeds recorded as deferred revenue		$ 3,500,000								$ 3,500,000
Number of ounces of gold		1,335								1,335