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Property, Plant, and Equipment - Components of Property, Plant, and Equipment (Details) - USD ($)
$ in Thousands
Dec. 31, 2015
Dec. 31, 2014
Property Plant And Equipment [Line Items]    
Property, plant and equipment, gross $ 4,638 $ 5,546
Accumulated depreciation (3,506) (3,748)
Property, plant and equipment, net 1,132 1,798
Buildings and Land [Member]    
Property Plant And Equipment [Line Items]    
Property, plant and equipment, gross 556 1,629
Enterprise Hardware and Software [Member]    
Property Plant And Equipment [Line Items]    
Property, plant and equipment, gross 1,520 1,573
Leaseholds [Member]    
Property Plant And Equipment [Line Items]    
Property, plant and equipment, gross 1,305 361
Equipment [Member]    
Property Plant And Equipment [Line Items]    
Property, plant and equipment, gross 902 1,380
Furniture [Member]    
Property Plant And Equipment [Line Items]    
Property, plant and equipment, gross $ 355 $ 603