Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies - Schedule of Distribution of Total Operating Expenses by Geographical Area (Details)

v3.19.1
Summary of Significant Accounting Policies - Schedule of Distribution of Total Operating Expenses by Geographical Area (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Segment Reporting Information [Line Items]    
Operating expenses $ 20,503 $ 12,394
Ireland    
Segment Reporting Information [Line Items]    
Operating expenses 17,436 9,964
U.S.    
Segment Reporting Information [Line Items]    
Operating expenses $ 3,067 $ 2,430