Property and Equipment - Summary of Property and Equipment (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Property and equipment	$ 110,993	$ 107,618
Less accumulated depreciation	(56,237)	(54,034)
Total	54,756	53,584
Land
Property, Plant and Equipment [Line Items]
Property and equipment	3,828	3,828
Building and improvements
Property, Plant and Equipment [Line Items]
Property and equipment	24,185	24,172
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment	499	501
Machinery and equipment
Property, Plant and Equipment [Line Items]
Property and equipment	18,381	18,022
Revenue-generating assets
Property, Plant and Equipment [Line Items]
Property and equipment	49,810	47,010
Office and computer equipment
Property, Plant and Equipment [Line Items]
Property and equipment	14,259	14,054
Motor vehicles
Property, Plant and Equipment [Line Items]
Property and equipment	$ 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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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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