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Revenues, Recognition and Allowances (Details Textual)
$ in Thousands
3 Months Ended
Mar. 31, 2018
USD ($)
transaction_type
Mar. 31, 2018
USD ($)
transaction_type
Mar. 31, 2018
USD ($)
drug
transaction_type
Mar. 31, 2018
USD ($)
transaction_type
product
Mar. 31, 2018
USD ($)
transaction_type
segment
Mar. 31, 2018
USD ($)
transaction_type
Mar. 31, 2017
USD ($)
Dec. 31, 2017
USD ($)
Disaggregation of Revenue [Line Items]                
Types of transactions | transaction_type 3 3 3 3 3 3    
Segments | segment         1      
Company product sales, net           $ 13,236 $ 16,436  
Accounts payable and accrued liabilities $ 100 $ 100 $ 100 $ 100 $ 100 100 4,000  
Increase (decrease) to medicaid reserve           (500)    
Accounts receivable, terms of customer credit 100 days              
Percentage of net sales for royalty   40.00%            
Royalties $ 893 $ 893 $ 893 $ 893 893 893 500 $ 856
Royalty expense           800 500  
United States                
Disaggregation of Revenue [Line Items]                
Products which the company pays royalties     4 4        
Products manufactured, marketed and distributed | drug     30          
IGI Product                
Disaggregation of Revenue [Line Items]                
Company product sales, net           13,200 16,400  
Net Of SRA Balance                
Disaggregation of Revenue [Line Items]                
Accounts receivable $ 24,700 $ 24,700 $ 24,700 $ 24,700 $ 24,700 $ 24,700 $ 27,900