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Inventories (Narrative) (Details) - USD ($)
Dec. 31, 2018
Dec. 31, 2017
Inventory [Line Items]    
Inventory reserves, obsolescence and discontinuance $ 300,000 $ 200,000
Inventory, Noncurrent 15,749,000 $ 0
VIBATIV    
Inventory [Line Items]    
Inventory, Noncurrent $ 800,000