Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Intangible Assets

Intangible assets were as follows:

	Estimated weighted average useful life in years		2018			2017
Cost
Customer relationship intangibles [note 7]		10	$	415		$	438
Computer software		2		291			348
Patent and licenses		12		340			342
				1,046			1,128
Accumulated depreciation
Customer relationship intangibles [note 7]				(191	)		(162	)
Computer software				(219	)		(263	)
Patent and licenses				(76	)		(53	)
			$	560		$	650