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SUPPLEMENTAL FINANCIAL INFORMATION (Tables)

12 Months Ended

Dec. 31, 2018

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of Other Nonoperating Income (Expense)

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

	Years ended December 31,
	2018				2017				2016
Interest income	$	336			$	161			$	143
Change in value of marketable securities	769				509				—
Change in value of warrant liabilities	(3,469		)		784				420
Change in value of convertible Debentures	(612		)		(940		)		(407		)
Gain on settlement of loans and borrowings	—				—				424
Gain on assets held for sale	341				—				—
Insurance settlement	—				—				223
Sales and property tax refunds	—				—				176
Gain on sale of mineral properties	—				—				316
Sale of surplus assets	293				1,913				—
Other	14				142				(96		)
Other (expense) income	$	(2,328	)		$	2,569			$	1,199

Schedule of Accounts Payable and Accrued Liabilities

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

	December 31, 2018				December 31, 2017
Accounts payable	$	1,881			$	762
Payroll liabilities	1,928				835
Other accrued liabilities	4,112				4,852
Accounts payable and accrued liabilities	$	7,921			$	6,449

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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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