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Zinc Zero Cost Collar (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Derivative Instruments, Gain (Loss) [Line Items]
Realized (gain) loss on zinc zero cost collar	$ 720	$ (777)
Unrealized (gain) loss on zinc zero cost collar	(357)	(225)
Total	170	3,000
Zinc
Derivative Instruments, Gain (Loss) [Line Items]
Realized (gain) loss on zinc zero cost collar	364	(632)
Unrealized (gain) loss on zinc zero cost collar	372	(380)
Zero Cost Collar | Zinc | Not designated as hedge
Derivative Instruments, Gain (Loss) [Line Items]
Realized (gain) loss on zinc zero cost collar	2,014	1,156
Unrealized (gain) loss on zinc zero cost collar	(1,844)	1,844
Total	$ 170	$ 3,000

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Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

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