Property and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 114,265	$ 107,618
Less accumulated depreciation	(57,992)	(54,034)
Property and equipment, net	56,273	53,584
Depreciation	10,659	8,798
Land
Property, Plant and Equipment [Line Items]
Property and equipment, gross	3,828	3,828
Building and improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	24,197	24,172
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	482	501
Revenue-generating assets
Property, Plant and Equipment [Line Items]
Property and equipment, gross	56,336	47,010
Machinery and equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	15,536	18,022
Office and computer equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	13,855	14,054
Motor vehicles
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 31	$ 31

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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The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

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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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