Property, Plant and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 74,870	$ 71,137
Accumulated depreciation and amortization	(59,070)	(54,591)
Property, plant and equipment, less accumulated depreciation and amortization	15,800	16,546
Land
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	2,650	2,625
Buildings and improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	15,765	15,356
Machinery and equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	26,814	24,509
Capitalized software
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	23,013	22,136
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	5,725	5,673
Vehicles
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	151	155
Construction in progress
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 752	$ 683

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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