Convertible Debentures (Tables)

3 Months Ended

Mar. 31, 2022

Convertible Debt [Abstract]

Schedule of Convertible Debt [Table Text Block]

		March 31, 2022			December 31, 2021
Face value of the convertible debentures	$	4,003		$	3,977
Transaction costs		(75	)		(74	)
Accretion		399			344
Convertible debentures	$	4,327		$	4,247