Supplemental Cash Flow Information - Supplemental and Non-cash transactions (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Supplemental Cash Flow Information
Interest paid	$ 7	$ 95
Income taxes paid		284
Deferred equity offering costs amortized	57	$ 32
Deferred equity offering costs written off	$ 352