Income Taxes- Future Income Taxes (Recovery) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Income Taxes Future Recovery Disclosure [Line Items]
Future tax assets gross	$ 27,572	$ 26,020
Less: valuation allowance	(27,572)	(26,020)
Net future tax assets	0	0
SR&ED expenditures [Member]
Income Taxes Future Recovery Disclosure [Line Items]
Future tax assets gross	2,086	2,195
Non refundable Investment Tax Credits [Member]
Income Taxes Future Recovery Disclosure [Line Items]
Future tax assets gross	1,121	1,250
Share Issue Costs [Member]
Income Taxes Future Recovery Disclosure [Line Items]
Future tax assets gross	99	45
Accrued Expenses [Member]
Income Taxes Future Recovery Disclosure [Line Items]
Future tax assets gross	0	0
Income Tax Loss Carry forwards [Member]
Income Taxes Future Recovery Disclosure [Line Items]
Future tax assets gross	23,182	21,452
Fixed and intangible assets [Member]
Income Taxes Future Recovery Disclosure [Line Items]
Future tax assets gross	1,083	1,065
Reserves [Member]
Income Taxes Future Recovery Disclosure [Line Items]
Future tax assets gross	$ 0	$ 13