Fair Value Measurement (Details) - USD ($) $ in Thousands |
12 Months Ended | |
---|---|---|
Dec. 31, 2021 |
Dec. 31, 2020 |
|
Accounts Receivable | ||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
Realized/unrealized derivative (loss) gain, net | $ 0 | $ 200 |
Fair Value Inputs Level 1 [Member] | ||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
Cash and cash equivalents | 33,712 | 25,405 |
Gold and silver rounds/bullion | 589 | 671 |
Fair Value Inputs Level 2 [Member] | ||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
Accounts receivable, net | 8,672 | $ 4,226 |
Derivative liability - zinc zero cost collar | $ (1,844) |