Other income (expenses) (Tables)

12 Months Ended

Dec. 31, 2016

Other Income and Expenses [Abstract]

Schedule of Other Income (Expenses)

	YEARS ENDED DECEMBER 31,
	2016			2015			2014
Change in fair value of derivative liability	$	81		$	(52	)	$	949
Foreign exchange losses		(13	)		(476	)		(361	)
Interest income		619			108			91
Miscellaneous		(43	)		(100	)		4
	$	644		$	(520	)	$	683