Leases (Tables)

12 Months Ended

Dec. 31, 2023

Leases [Abstract]

Schedule of Components of Expense and Supplemental Cash Flow Information

For the years ended December 31, 2023 and 2022, the components of operating lease expense were as follows:

	December 31,
	2023		2022
Fixed operating lease expense	$	6,447	$	11,467
Variable operating lease expense	8,358		10,752
Total operating lease expense	$	14,805	$	22,219

Supplemental cash flow information related to the Company's operating leases for the years ended December 31, 2023 and 2022 was as follows:

	December 31,
	2023		2022
Cash paid for amounts included in the measurement of operating lease liabilities	$	6,148	$	22,020

The Company also enters into finance leases for mining equipment and automobiles. Assets arising from finance leases are included in property, plant and equipment-net and the liabilities are included in current portion of long-term debt and long-term debt in the accompanying Consolidated Balance Sheets.

For the years ended December 31, 2023 and 2022, the components of finance lease expense were as follows:

	December 31,
	2023		2022
Amortization of right of use assets	$	25,400	$	24,206
Interest expense	1,712		2,751
Total finance lease expense	$	27,112	$	26,957

The following table presents the weighted average lease term and weighted average discount rate related to the Company's finance leases as of December 31, 2023 and 2022:

	December 31, 2023		December 31, 2022
Weighted average remaining lease term (in years)	1.64		1.62
Weighted average discount rate	6.68	%	6.53	%

Schedule of Lease Assets and Liabilities

The following table presents the lease balances within the Consolidated Balance Sheets, weighted average lease term, and the weighted average discount rate related to the Company's operating leases at December 31, 2023 and 2022:

		December 31,
Lease Assets and Liabilities	Classification	2023			2022
Assets:
Operating Lease ROU Assets	Other Assets	$	14,658		$	19,799
Liabilities:
Current:
Operating Lease Liabilities	Operating Lease Liabilities	$	4,769		$	4,922
Long-Term:
Operating Lease Liabilities	Operating Lease Liabilities	$	10,385		$	15,073
Total Operating Lease Liabilities		$	15,154		$	19,995
Weighted average remaining lease term (in years)		4.46			4.83
Weighted average discount rate		7.21		%	7.13		%

Lessee, Operating Lease, Liability, Maturity

The following table presents the future maturities of the Company's operating and finance lease liabilities, together with the present value of the net minimum lease payments, at December 31, 2023:

	Finance Leases		Operating Leases
2024	$	10,045	$	5,669
2025	3,649		4,135
2026	487		4,011
2027	369		658
2028	149		638
Thereafter	—		2,799
Total minimum lease payments	14,699		17,910
Less amount representing interest	1,046		2,756
Present value of minimum lease payments	$	13,653	$	15,154

Finance Lease, Liability, Fiscal Year Maturity

The following table presents the future maturities of the Company's operating and finance lease liabilities, together with the present value of the net minimum lease payments, at December 31, 2023:

	Finance Leases		Operating Leases
2024	$	10,045	$	5,669
2025	3,649		4,135
2026	487		4,011
2027	369		658
2028	149		638
Thereafter	—		2,799
Total minimum lease payments	14,699		17,910
Less amount representing interest	1,046		2,756
Present value of minimum lease payments	$	13,653	$	15,154