SUPPLEMENTAL FINANCIAL INFORMATION (Tables)

6 Months Ended

Jun. 30, 2021

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of Other Nonoperating Income (Expense)

The components of other income are as follows:

	Three months ended June 30,				Six months ended June 30,
	2021		2020		2021		2020
Interest income	$	14	$	56	$	25	$	128
Change in value of investments accounted for at fair value	(435)		527		1,021		136
Change in value of warrant liabilities	(3,546)		(1,238)		(7,050)		(92)
Change in value of Convertible Debentures	—		(465)		—		—
Foreign exchange gain (loss)	659		(255)		320		981
Other	873		—		1,202		(36)
Other income (loss)	$	(2,435)	$	(1,375)	$	(4,482)	$	1,117