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Subsidiary Bankruptcy and Deconsolidation (Details) - USD ($)
$ in Thousands
3 Months Ended
Apr. 26, 2019
Mar. 31, 2019
Mar. 31, 2018
Feb. 08, 2019
Business Acquisition, Contingent Consideration [Line Items]        
Gain (loss) on deconsolidation of subsidiary   $ (2,673) $ 0  
DIP Credit Agreement | Debtor in Possession Credit and Security Facility        
Business Acquisition, Contingent Consideration [Line Items]        
Gain (loss) on deconsolidation of subsidiary   (407)    
Payments for debtor in possession financing   407    
Specialty Pharma        
Business Acquisition, Contingent Consideration [Line Items]        
Equity method investments, fair value   $ 0    
Speciality Pharama | Subsequent Event        
Business Acquisition, Contingent Consideration [Line Items]        
Aggregate cash proceeds of intangible assets and remaining inventory $ 250      
Speciality Pharama | DIP Credit Agreement | Debtor in Possession Credit and Security Facility        
Business Acquisition, Contingent Consideration [Line Items]        
DIP financing, amount arranged       $ 2,700