Ordinary shares - Narrative (Details)			12 Months Ended
	Jan. 11, 2021 USD ($) shares	Jun. 12, 2020 USD ($) shares	Dec. 31, 2021 USD ($) shares	Dec. 31, 2020 USD ($) shares	Dec. 31, 2019 USD ($) shares	Dec. 31, 2021 € / shares shares	Jan. 11, 2021 € / shares	Dec. 31, 2020 € / shares shares	Jun. 12, 2020 € / shares	Dec. 14, 2018 USD ($)
Class of Stock [Line Items]
Amount of ordinary shares authorized for repurchase | $										$ 100,000,000
Repurchase of ordinary shares (in shares)			0	340,109	1,791,487
Ordinary shares issued (in shares)		4,878,049
Ordinary shares, par value (in Euros per share) | € / shares						€ 0.10	€ 0.10	€ 0.10	€ 0.10
Cash consideration, after customary closing costs, for issuance of common stock | $	$ 137,700,000	$ 19,600,000	$ 137,716,000	$ 19,558,000	$ 0
Ordinary shares, outstanding (in shares)						164,438,280		134,571,290
Restricted Shares
Class of Stock [Line Items]
Shares outstanding (in shares)						4,007,985
Restricted Share Units
Class of Stock [Line Items]
Shares outstanding (in shares)						26,325
Ordinary Shares
Class of Stock [Line Items]
Repurchase of ordinary shares (in shares)				340,109	1,791,487
Ordinary shares issued (in shares)	28,750,000		28,750,000	4,878,049