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Subsequent Events (Details) - Scioderm - USD ($)
$ in Millions
1 Months Ended 3 Months Ended
Apr. 30, 2017
Mar. 31, 2017
Milestone payment $ 10  
Enrollment rate (as a percent)   100.00%
Subsequent event    
Milestone payment $ 10  
Enrollment rate (as a percent) 100.00%