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)

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Summary of Significant Accounting Policies - Schedule of Distribution of Total Operating Expenses by Geographical Area (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Segment Reporting Information [Line Items]        
Operating expenses $ 8,253 $ 27,378 $ 21,147 $ 47,881
Ireland        
Segment Reporting Information [Line Items]        
Operating expenses 5,641 24,261 15,072 41,697
U.S.        
Segment Reporting Information [Line Items]        
Operating expenses $ 2,612 $ 3,117 $ 6,075 $ 6,184