Debt - Convertible Senior Notes (Details) $ / shares in Units, $ in Thousands		3 Months Ended
	Aug. 07, 2017 USD ($) $ / shares	Mar. 31, 2024 USD ($)	Mar. 31, 2023 USD ($)	Mar. 31, 2022 USD ($) $ / shares $ / Item	Dec. 31, 2023 USD ($)	Aug. 01, 2017 $ / shares	Jan. 31, 2013 USD ($)
Debt
Payment for repurchase of debt instrument		$ 0	$ 96,204
Debt discount and issuance costs, net		(6,741)			$ (7,266)
2023 Notes
Debt
Loan amount		$ 96,200
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%
Principal		$ 192,500			192,500
Debt discount and issuance costs, net		(1,024)			(1,205)
Net carrying amount		191,476			191,295
Interest expense
Contractual interest expense		1,203	1,203
Amortization of debt issuance costs		181	176
Total interest and amortization expense		$ 1,384	1,379
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%
Principal		$ 261,000			261,000
Debt discount and issuance costs, net		(5,717)			(6,061)
Net carrying amount		255,283			$ 254,939
Interest expense
Contractual interest expense		1,387	1,387
Amortization of debt issuance costs		344	335
Total interest and amortization expense		$ 1,731	$ 1,722
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 for repurchase of debt instrument				$ 165,600