Shareholders' Equity - Narrative (Details) - USD ($)	3 Months Ended	5 Months Ended	12 Months Ended
	Mar. 31, 2020	Sep. 30, 2019	Dec. 31, 2020	Dec. 31, 2019	Nov. 21, 2019	Mar. 26, 2019
Class of Stock [Line Items]
Authorized repurchase amount					$ 50,000,000	$ 50,000,000
Shares repurchased and canceled (in shares)	505,699	1,732,392
Weighted average price (in dollars per share)		$ 28.86
Aggregate purchase price	$ 16,900,000	$ 50,000,000	$ 16,873,000	$ 50,252,000
Ordinary shares, shares outstanding (in shares)			44,539,433	44,676,132
Cash received upon settlement			$ 400,000
Settlement payment			1,400,000
Disproportionate tax effect			14,700,000
Convertible Notes
Class of Stock [Line Items]
Debt instrument, fair value of embedded option			71,700,000	$ 71,700,000
Purchase of convertible hedges			72,600,000	72,600,000
Proceeds from Issuance of Warrants			40,500,000	40,500,000
Deferred financing cost allocated to equity			$ 1,600,000	$ 1,600,000
Non-U.S.
Class of Stock [Line Items]
Stamp taxes payable	$ 100,000	$ 300,000