Property and Equipment (Components of Property, Plant and Equipment) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Components of Property, Plant and Equipment
Property and equipment	$ 82,462	$ 86,844
Less accumulated depreciation	(36,977)	(34,058)
Property and equipment, net	45,485	52,786
Land
Components of Property, Plant and Equipment
Property and equipment	4,372	4,008
Buildings and leasehold improvements
Components of Property, Plant and Equipment
Property and equipment	37,719	37,786
Machinery and equipment
Components of Property, Plant and Equipment
Property and equipment	26,995	25,762
Fixed assets in progress
Components of Property, Plant and Equipment
Property and equipment	581	3,573
Furniture and fixtures
Components of Property, Plant and Equipment
Property and equipment	1,573	1,869
Transportation equipment
Components of Property, Plant and Equipment
Property and equipment	1,852	1,802
Computer equipment and software
Components of Property, Plant and Equipment
Property and equipment	$ 9,370	$ 12,044

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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