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 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Segment Reporting Information [Line Items]        
Operating expenses $ 6,335 $ 30,999 $ 27,482 $ 78,880
Ireland        
Segment Reporting Information [Line Items]        
Operating expenses 4,859 28,309 19,931 70,006
U.S.        
Segment Reporting Information [Line Items]        
Operating expenses $ 1,476 $ 2,690 $ 7,551 $ 8,874