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Debt - Convertible Notes (Details) - USD ($)	Jun. 30, 2022	Dec. 31, 2021	Jan. 01, 2021	Sep. 30, 2019	Aug. 31, 2015
3.00% Convertible senior notes due 2022
Long-term debt
Less: Debt discount, net			$ 0
3.00% Convertible senior notes due 2022 | Convertible debt
Long-term debt
Principal	$ 150,000,000	$ 150,000,000			$ 150,000,000.0
Less: Debt issuance costs	(92,000)	(460,000)
Net carrying amount	149,908,000	149,540,000
1.50% Convertible senior notes due 2026
Long-term debt
Less: Debt discount, net			$ 0
1.50% Convertible senior notes due 2026 | Convertible debt
Long-term debt
Principal	287,500,000	287,500,000		$ 287,500,000
Less: Debt issuance costs	(5,040,000)	(5,606,000)
Net carrying amount	$ 282,460,000	$ 281,894,000

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