INVESTMENTS (Tables)

6 Months Ended

Jun. 30, 2019

Summary of investment portfolio

	As at		Additions		Net gain		Disposals		Unrealized		Fair value
	December 31,		during		(loss) on		during		gain (loss) on		June 30,
	2018		period		securities sold		period		securities held		2019
Marketable equity securities	$	2,718	$	264	$	—	$	—	$	1,372	$	4,354
Warrants		413		—		—		—		380		793
Investments	$	3,131	$	264	$	—	$	—	$	1,752	$	5,147

	As at		Additions		Net gain		Disposals		Unrealized		Fair value
	December 31,		during		(loss) on		during		gain (loss) on		June 30,
	2017		period		securities sold		period		securities held		2018
Marketable equity securities	$	6,404	$	1,211	$	(767)	$	(2,899)	$	(1,637)	$	2,312
Warrants		1,567		—		—		(702)		(865)		—
Investments	$	7,971	$	1,211	$	(767)	$	(3,601)	$	(2,502)	$	2,312