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Summary of Significant Accounting Policies - Inventory (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Dec. 31, 2017
Inventory          
Raw materials         $ 40,000
Work in process $ 1,938,000   $ 1,938,000   998,000
Total 1,938,000   $ 1,938,000   1,038,000
Minimum supply period of raw materials that is not supported by firm, fixed orders and/or projections from collaborators considered to expense inventory     12 months    
Value of excess inventory 0   $ 0    
Expense related to excess inventory 47,243,000 $ 31,689,000 130,775,000 $ 99,896,000  
Reserve for work in process $ 0   0   $ 0
Difference between full cost and amounts received     965,000 1,100,000  
ADC Technology          
Inventory          
Expense related to excess inventory     $ 0 $ 403,000