Income Taxes - Income (Loss) Before Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Taxes [Line Items]
Income (loss) before income taxes	$ (5,082)	$ (38,582)	$ (113,197)
Ireland
Income Taxes [Line Items]
Income (loss) before income taxes	(27,205)	(50,134)	(42,604)
U.S.
Income Taxes [Line Items]
Income (loss) before income taxes	22,335	10,401	(70,340)
France
Income Taxes [Line Items]
Income (loss) before income taxes	$ (212)	$ 1,151	$ (253)