Property, Plant and Equipment (Details) - USD ($) $ in Thousands  | 
Sep. 30, 2020  | 
Dec. 31, 2019  | 
|---|---|---|
| Property, Plant and Equipment [Line Items] | ||
| Total property, plant and equipment, gross | $ 105,566 | $ 105,497 | 
| Less accumulated depreciation and amortization | 69,235 | 64,807 | 
| Property, plant and equipment, net | 36,331 | 40,690 | 
| Land | ||
| Property, Plant and Equipment [Line Items] | ||
| Total property, plant and equipment, gross | 63 | 63 | 
| Leasehold improvements | ||
| Property, Plant and Equipment [Line Items] | ||
| Total property, plant and equipment, gross | 2,866 | 1,921 | 
| Buildings | ||
| Property, Plant and Equipment [Line Items] | ||
| Total property, plant and equipment, gross | 84 | 214 | 
| Machinery, fixtures and equipment | ||
| Property, Plant and Equipment [Line Items] | ||
| Total property, plant and equipment, gross | 100,097 | 100,300 | 
| Construction-in-progress | ||
| Property, Plant and Equipment [Line Items] | ||
| Total property, plant and equipment, gross | $ 2,456 | $ 2,999 | 
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- Definition Amount of accumulated depreciation and amortization from plant, property, and equipment and right-of-use asset from finance lease. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef 
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- Definition Amount, after accumulated depreciation and amortization, of property, plant, and equipment and finance lease right-of-use asset. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef 
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- Definition Amount, before accumulated depreciation and amortization, of property, plant, and equipment and finance lease right-of-use asset. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef 
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available. 
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