Convertible Senior Notes - Expenses and Interest (Details) - 3.75% Convertible Senior Notes - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Debt Instrument [Line Items]
Interest expense	$ 1,849	$ 1,849
Amortization of debt issuance costs	323	306
Total	$ 2,172	$ 2,155
Effective interest rate (as a percent)	4.50%	4.50%