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SUPPLEMENTAL FINANCIAL INFORMATION (Tables)

12 Months Ended

Dec. 31, 2021

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of Other Nonoperating Income (Expense)

The components of other income (loss) are as follows:

			Years ended December 31,
			2021						2020						2019
Interest income			$	44					$	153					$	482
Change in value of investments accounted for at fair value			7,106						1,835						(153)
Change in value of warrant liabilities			(8,078)						(5,436)						3,726
Change in value of Convertible Debentures			—						155						291
Foreign exchange gain (loss)			(128)						767						(46)
Department of Energy awards (1)			1,900						—						—
Other			350						233						(322)
Other income (loss)			$	1,194					$	(2,293)					$	3,978

(1)See Part II, Item 7 "Outlook: Update on Rare Earth Element Initiative."

Schedule of Accounts Payable and Accrued Liabilities

The components of accounts payable and accrued liabilities are as follows:

			December 31, 2021						December 31, 2020
Accounts payable			$	3,038					$	1,108
Payroll liabilities			1,988						1,512
Other accrued liabilities			738						701
Accounts payable and accrued liabilities			$	5,764					$	3,321

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Tabular disclosure of the (a) carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business (accounts payable); (b) other payables; and (c) accrued liabilities. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). An alternative caption includes accrued expenses.

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Tabular disclosure of the components of non-operating income or non-operating expense that may include amounts earned from dividends, interest on securities, gains (losses) on securities sold, equity earnings of unconsolidated affiliates, net gain (loss) on sales of business, interest expense and other miscellaneous income or expense items.

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