Property, Plant and Equipment - Summary of Property, Plant and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Property, plant and equipment, gross	$ 188	$ 2,699
Accumulated depreciation	(112)	(216)
Property, plant and equipment, net	76	2,483
Building [Member]
Property, plant and equipment, gross		1,856
Land [Member]
Property, plant and equipment, gross		510
Office Equipment [Member]
Property, plant and equipment, gross	63	248
Computer Software [Member]
Property, plant and equipment, gross	107	61
Leasehold Improvements [Member]
Property, plant and equipment, gross		6
Operating Lease Asset [Member]
Property, plant and equipment, gross	$ 18	$ 18

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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