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SUPPLEMENTAL FINANCIAL INFORMATION (Tables)

12 Months Ended

Dec. 31, 2019

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,
	2019				2018				2017
Interest income	$	482			$	336			$	161
Change in value of investments accounted for at fair value	(153		)		769				509
Change in value of warrant liabilities	3,726				(3,469		)		784
Change in value of Convertible Debentures	291				(612		)		(940		)
Gain on assets held for sale	—				341				—
Foreign exchange loss	(46		)		—				—
Sale of surplus assets	—				293				1,913
Other	(322		)		14				142
Other income (loss)	$	3,978			$	(2,328	)		$	2,569

Schedule of Accounts Payable and Accrued Liabilities

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

	December 31, 2019				December 31, 2018
Accounts payable	$	2,033			$	1,881
Payroll liabilities	1,588				1,928
Other accrued liabilities	1,817				4,112
Accounts payable and accrued liabilities	$	5,438			$	7,921

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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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