Deferred Gain on Sale of Royalty (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
---|---|---|---|
May 29, 2020 |
Dec. 31, 2021 |
Dec. 31, 2020 |
|
Other Liabilities Disclosure [Abstract] | |||
Proceeds from royalty obligation | $ 30,000 | $ 0 | $ 30,000 |
Smelter royalty obligation, percentage | 1.50% | ||
Smelter royalty obligation, right to repurchase percentage | 33.30% | ||
Smelter royalty obligation, right to repurchase percentage, net of returns | 0.50% | ||
Amortization of royalty obligation | 100 | ||
Payments for royalty obligations | 2,300 | ||
Deferred gain on sale of royalty | $ 125 | $ 124 |