Note 5 - Investments (Tables)

12 Months Ended

Dec. 31, 2018

Statement Line Items [Line Items]

Disclosure of investments not accounted for using equity method

		December 31,  2018		December 31,  2017
Equity securities (strategically acquired)	$	1,742	$	2,435
Warrants		39		661
	$	1,781	$	3,096

Disclosure of the available-for-sale movements [text block]

		December 31, 2018			December 31, 2017
Equity securities, beginning of year	$	2,435		$	550
Additions ( see Note 7 )		1,202			1,553
Unrealized (loss) gain for the year		(1,895	)		332
Equity securities, end of year	$	1,742		$	2,435

Disclosure of financial instruments designated at fair value through profit or loss [text block]

		December 31, 2018			December 31, 2017
Warrants, beginning of year	$	661		$	168
Additions		–			151
Change in fair value of warrants		(622	)		342
Warrants, end of year	$	39		$	661