Property, Plant, and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Nov. 17, 2020
Property, plant, and equipment, cost, beginning	$ 20,155	$ 24,897
Reverse acquisition (Note 26)	2,210
Additions	777	4,063
Disposals	(377)	(56)
Transfers	0	0
Foreign exchange difference		(8,749)
Property, plant, and equipment, cost, ending		20,155
Accumulated depreciation, beginning	10,677	8,510
Disposals	(264)	(41)
Depreciation	1,844	4,512
Impairment		690
Foreign exchange difference		(2,994)
Accumulated depreciation, ending		10,677
Net book value		9,478	$ 10,508
Plant
Property, plant, and equipment, cost, beginning	5,901	8,242
Reverse acquisition (Note 26)	1,732
Additions	203	576
Disposals	0	0
Transfers	0	0
Foreign exchange difference		(2,917)
Property, plant, and equipment, cost, ending	7,836	5,901
Accumulated depreciation, beginning	5,761	4,505
Disposals	0	0
Depreciation	144	2,849
Impairment		0
Foreign exchange difference		(1,593)
Accumulated depreciation, ending	5,905	5,761
Net book value	1,931	140
Buildings
Property, plant, and equipment, cost, beginning	230	356
Reverse acquisition (Note 26)	69
Additions	0	0
Disposals	0	0
Transfers	0	0
Foreign exchange difference		(126)
Property, plant, and equipment, cost, ending	299	230
Accumulated depreciation, beginning	33	45
Disposals	0	0
Depreciation	9	4
Impairment		0
Foreign exchange difference		(16)
Accumulated depreciation, ending	42	33
Net book value	257	197
Vehicles and Equipment
Property, plant, and equipment, cost, beginning	13,458	15,234
Reverse acquisition (Note 26)	409
Additions	244	3,263
Disposals	(326)	(56)
Transfers	106	344
Foreign exchange difference		(5,327)
Property, plant, and equipment, cost, ending	13,891	13,458
Accumulated depreciation, beginning	4,883	3,960
Disposals	(264)	(41)
Depreciation	1,691	1,659
Impairment		690
Foreign exchange difference		(1,385)
Accumulated depreciation, ending	6,310	4,883
Net book value	7,581	8,575
Improvements and Advances
Property, plant, and equipment, cost, beginning	566	1,065
Reverse acquisition (Note 26)	0
Additions	330	224
Disposals	(51)	0
Transfers	(106)	(344)
Foreign exchange difference		(379)
Property, plant, and equipment, cost, ending	739	566
Accumulated depreciation, beginning	0	0
Disposals	0	0
Depreciation	0	0
Impairment		0
Foreign exchange difference		0
Accumulated depreciation, ending	0	0
Net book value	$ 739	$ 566