Debt - Convertible Senior Notes (Details) $ / shares in Units, $ in Thousands		3 Months Ended			6 Months Ended
	Aug. 07, 2017 USD ($) $ / shares	Jun. 30, 2024 USD ($)	Jun. 30, 2023 USD ($)	Mar. 31, 2022 USD ($) $ / shares $ / Item	Jun. 30, 2024 USD ($)	Jun. 30, 2023 USD ($)	Dec. 31, 2023 USD ($)	Aug. 01, 2017 $ / shares	Jan. 31, 2013 USD ($)
Debt
Payment upon maturity of debt instrument					$ 0	$ 96,204
Debt discount and issuance costs, net		$ (6,218)			$ (6,218)		$ (7,266)
2025 Notes
Debt
Common stock price to current conversion price ratio					130.00%
Average trading price percentage					98.00%
2025 Notes | Common stock
Debt
Share Price | $ / shares								$ 13.28
2028 Notes
Debt
Debt instrument, covenant terms description					The indenture governing the 2028 Notes contains customary terms and covenants, including a merger covenant and that upon certain events of default occurring and continuing, either the Trustee or the holders of at least 25% of the aggregate principal amount of the outstanding Notes may declare 100% of the principal of, and accrued and unpaid interest, if any, on, all the Notes to be due and payable immediately.
Convertible senior notes | 2025 Notes
Debt
Ratio of repurchase price to the principal amount					100.00%
Effective interest rate		2.88%			2.88%
Principal		$ 192,500			$ 192,500		192,500
Debt discount and issuance costs, net		(841)			(841)		(1,205)
Net carrying amount		191,659			191,659		191,295
Interest expense
Contractual interest expense		1,203	$ 1,203		2,406	2,406
Amortization of debt issuance costs		183	177		364	353
Total interest and amortization expense		$ 1,386	1,380		$ 2,770	2,759
Convertible senior notes | 2025 Notes | Over-Allotment Option
Debt
Loan amount	$ 17,500
Portion of debt instrument face amount, Exercised	17,500
Convertible senior notes | 2025 Notes | Private Placement
Debt
Loan amount	$ 192,500
Debt Instrument, annual interest rate	2.50%
Convertible senior notes | 2025 Notes | Common stock
Debt
Conversion rate for shares of common stock per $1,000 principal	57.924
Conversion price (dollars per share) | $ / shares	$ 17.26
Debt instrument maturity date	Aug. 15, 2025
Conversion premium (as a percent)	30.00%
Convertible senior notes | 2028 Notes
Debt
Loan amount				$ 261,000
Debt instrument maturity date				Mar. 15, 2028
Proceeds from issuance of convertible notes, net of issuance costs				$ 252,600
Common stock price to current conversion price ratio				130.00%
Average trading price percentage				98.00%
Ratio of repurchase price to the principal amount				100.00%
Effective interest rate		2.70%			2.70%
Principal		$ 261,000			$ 261,000		261,000
Debt discount and issuance costs, net		(5,377)			(5,377)		(6,061)
Net carrying amount		255,623			255,623		$ 254,939
Interest expense
Contractual interest expense		1,387	1,387		2,773	2,773
Amortization of debt issuance costs		339	331		684	666
Total interest and amortization expense		$ 1,726	$ 1,718		$ 3,457	$ 3,439
Convertible senior notes | 2028 Notes | Privately-negotiated capped call option
Debt
Cap price for the underlying number of shares (in dollars per share) | $ / Item				33.985
Purchases of capped calls in connection with convertible senior notes due 2028				$ 21,000
Convertible senior notes | 2028 Notes | Over-Allotment Option
Debt
Loan amount				45,000
Portion of debt instrument face amount, Exercised				$ 36,000
Convertible senior notes | 2028 Notes | Private Placement
Debt
Debt Instrument, annual interest rate				2.125%
Convertible senior notes | 2028 Notes | Common stock
Debt
Conversion rate for shares of common stock per $1,000 principal				38.1432
Conversion price (dollars per share) | $ / shares				$ 26.22
Convertible subordinated notes | 2023 Notes
Debt
Loan amount									$ 287,500
Debt Instrument, Repurchased Face Amount				$ 144,800
Payment upon maturity of debt instrument				$ 165,600