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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 |  |  |

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