Capital Stock - Schedule of proceeds of equity components based on fair value (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($)
Class of Stock [Line Items]
Gross proceeds of units	$ 3,200
Transaction costs of units	328
Net proceeds of units	2,872
Common stock [Member]
Class of Stock [Line Items]
Gross proceeds of units	1,627
Transaction costs of units	167
Net proceeds of units	1,460
Warrants [Member]
Class of Stock [Line Items]
Gross proceeds of units	487
Transaction costs of units	50
Net proceeds of units	437
Public Offering [Member]
Class of Stock [Line Items]
Gross proceeds of units	12,634
Transaction costs of units	2,011
Net proceeds of units	10,623
Public Offering [Member] | Common stock [Member]
Class of Stock [Line Items]
Gross proceeds of units	10,926
Transaction costs of units	1,739
Net proceeds of units	9,187
Public Offering [Member] | Warrants [Member]
Class of Stock [Line Items]
Gross proceeds of units	1,708
Transaction costs of units	272
Net proceeds of units	$ 1,436