Convertible Notes (Tables)

12 Months Ended

Dec. 31, 2021

Debt Instrument [Line Items]

Schedule of Capital Units [Table Text Block]

		Gross proceeds		Transaction costs		Net proceeds
Common stock	$	1,627	$	167	$	1,460
Convertible notes		1,086		111		975
Warrants		487		50		437
	$	3,200	$	328	$	2,872

8% convertible notes due July 31, 2025 [Member]

Debt Instrument [Line Items]

Schedule of Components of the Convertible Notes [Table Text Block]

		December 31, 2021
Face value of the convertible notes	$	2,101
Transaction costs		(403	)
Accretion		58
Beneficial conversion feature		(411	)
Convertible notes	$	1,345

Amendment To Convertible Note [Member]

Debt Instrument [Line Items]

Schedule of Components of the Convertible Notes [Table Text Block]

		December 31, 2021
Face value of the convertible notes	$	909
Transaction costs		(29	)
Accretion		21
Convertible notes	$	901

8% convertible notes due Oct 15, 2024 [Member]

Debt Instrument [Line Items]

Schedule of Components of the Convertible Notes [Table Text Block]

		December 31, 2021		December 31, 2020
Attributed value of net proceeds to convertible notes	$	1,397	$	1,494
Accretion		66		11
Convertible note		1,463	$	1,505