Related party transactions and balances (Tables)

12 Months Ended

Dec. 31, 2018

Disclosure Of Transactions Between Related Parties [Abstract]

Summary of Key Management Personnel

Key management personnel are persons responsible for planning, directing and controlling activities of an entity, and include executive and non-executive directors. Compensation provided to key management is as follows:

	2018		2017
Short-term employee benefits, including salaries and fees	$	437	$	417
Professional fees		343		234
Share-based payments		1,448		899
	$	2,228	$	1,550