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Property, Plant and Equipment Property, Plant and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Property, Plant and Equipment [Line Items]
Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property	$ 0	$ 5,422
Property, plant and equipment, gross	85,226	84,939
Accumulated depreciation and amortization,	(61,678)	(57,606)
Property, plant and equipment, less accumulated depreciation and amortization	23,548	27,333
Land
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	2,565	2,752
Buildings and improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	16,858	16,973
Machinery and equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	23,955	23,277
Capitalized software
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	21,738	21,947
McCook facility
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	12,961	12,961
Accumulated depreciation and amortization,		(8,500)
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	5,884	5,634
Capital leases
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	684	806
Accumulated depreciation and amortization,		(300)
Vehicles
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	190	214
Construction in progress
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 391	$ 375

X

- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section 50
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- Definition

Amount of gain (loss) on sale or disposal of property, plant and equipment assets, excluding oil and gas property and timber property.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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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.

+ References

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+ References

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