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Nature of Operations (Q3) (Details)
3 Months Ended 9 Months Ended
Jun. 30, 2018
USD ($)
Sep. 30, 2018
USD ($)
Mar. 28, 2018
Subject
Nature of Operations [Abstract]      
Number of days of treatment received by subjects prior to pre-specified interim analysis   90 days  
Number of subjects randomized and treated first in Phase 3 NEWTON 2 study of EG-1962 | Subject     210
Severance costs $ 4,000,000    
Financial advisor fees 2,300,000    
Restructuring Reserve [Roll Forward]      
Restructuring reserve at beginning of period   $ 0  
Initial restructuring charge $ 6,276,563 6,276,563  
Incurred legal fees   334,212  
Retention compensation   618,349  
Restructuring expenses to date [1]   7,229,124  
Payment of legal fees   (191,976)  
Payment of retention compensation   (56,925)  
Payment of severance benefits   (1,800,501)  
Restructuring reserve at end of period   5,179,722  
Non-cash stock-based retention compensation   $ 264,970  
[1] Excludes non-cash stock based retention compensation of $264,970 expensed to date through restructuring expenses.