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Dispositions (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended 24 Months Ended
Jun. 30, 2020
Dec. 31, 2019
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2020
Dispositions            
Asset impairment     $ 281 $ 4,020 $ 375,172  
Asset held for sale            
Dispositions            
Asset impairment   $ 4,000        
One non-core product line | Assets sold            
Dispositions            
Consideration $ 11,400          
Transaction price due upon closing (as a percent) 85.00%          
Amount held in escrow (as a percent) 15.00%          
Period over which portion of transaction price is held in escrow 18 months          
Asset impairment $ 300          
Major classes of assets sold            
Inventories     6,311     $ 6,311
Property, plant, and equipment, net     372     372
Intangible assets, net     6,546     6,546
Goodwill     2,359     2,359
Deferred revenue     (59)     (59)
Total net assets sold     15,529     15,529
Net proceeds after costs to sell     $ (11,228)     (11,228)
Total impairment on sale of disposal group           $ 4,301
One non-core product line | Asset held for sale            
Dispositions            
Asset impairment       $ 4,000