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, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Segment Reporting Information [Line Items]        
Operating expenses $ 6,987 $ 8,253 $ 12,834 $ 21,147
Ireland        
Segment Reporting Information [Line Items]        
Operating expenses 4,192 5,641 8,110 15,072
U.S.        
Segment Reporting Information [Line Items]        
Operating expenses 2,794 $ 2,612 4,678 $ 6,075
Bermuda        
Segment Reporting Information [Line Items]        
Operating expenses $ 1   $ 46