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Convertible Senior Notes - Narrative (Details) | 1 Months Ended | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Jan. 31, 2021 USD ($) | May 31, 2018 USD ($) d $ / shares shares | Jun. 30, 2022 USD ($) | Jun. 30, 2022 USD ($) | Jun. 30, 2021 USD ($) | Dec. 31, 2021 USD ($) option shares
Debt Instrument [Line Items] |  |  |  |  |  |
Gain on extinguishment of debt |  |  |  | $ 3,326,000 | $ (7,175,000) |
Adjustments to additional paid-in-capital from warrants |  |  |  |  |  | $ 500,000
Payments to unwind warrants |  |  |  |  |  | 18,400,000
Proceeds from unwinding convertible bond hedges |  |  |  |  |  | $ 18,900,000
Number of options under convertible bond hedges | option |  |  |  |  |  | 598,021
Convertible Notes | 2023 Convertible Senior Notes |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Interest rate (as a percent) |  | 0.75% |  |  |  |
Aggregate principal amount outstanding |  | $ 750,000,000 | $ 115,499,000 | 115,499,000 |  | $ 343,301,000
Proceeds from debt, net of issuance costs |  | $ 733,100,000 |  |  |  |
Initial conversion rate (shares per $1,000) |  | 0.0040244 |  |  |  |
Initial conversion price (USD per share) | $ / shares |  | $ 248.48 |  |  |  |
Debt issuance costs |  |  | $ 16,900,000 | $ 16,900,000 |  |
Term of debt instrument |  |  |  | 5 years |  |
Effective interest rate (as a percent) |  |  | 0.50% | 0.50% |  |
Total interest expense |  |  | $ 400,000 | $ 1,200,000 |  |
Contractual interest expense |  |  | 200,000 | 700,000 |  |
Amortized issuance costs |  |  | 200,000 | 500,000 |  |
Repurchased amount of debt instrument | $ 20,300,000 |  | 62,000,000 | 227,800,000 |  | 152,000,000
Repayments of notes | 19,100,000 |  | 60,000,000 | 223,700,000 |  | 156,000,000
Accrued interest portion of repurchased amount of debt instrument | $ 100,000 |  | 10,000.00 | 400,000 |  | 300,000
Outstanding principal amount of debt |  |  |  |  |  | $ 343,300,000
Gain on extinguishment of debt |  |  | 1,800,000 | 3,300,000 |  |
Increase (decrease) in debt discount |  |  | $ 300,000 | $ 1,200,000 |  |
Warrants issued in public offering (shares) | shares |  | 3,018,327 |  |  |  | 2,559,254
Payments for convertible bond hedges |  | $ 140,300,000 |  |  |  |
Warrant exercise price (USD per share) | $ / shares |  | $ 315.38 |  |  |  |
Adjustments to additional paid-in-capital from warrants |  | $ 90,000,000 |  |  |  |
Accrued Interest |  |  |  |  |  | $ 300,000
Convertible Notes | 2023 Convertible Senior Notes | Maximum |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Initial conversion rate (shares per $1,000) |  | 0.0052317 |  |  |  |
Initial conversion price (USD per share) | $ / shares |  | $ 191.14 |  |  |  |
Convertible Notes | 2023 Convertible Senior Notes | Debt Instrument, Redemption, Period One |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Threshold trading days | d |  | 20 |  |  |  |
Consecutive trading days | d |  | 30 |  |  |  |
Stock price trigger to classify convertible debt as current (as a percent) |  | 130.00% |  |  |  |
Convertible Notes | 2023 Convertible Senior Notes | Debt Instrument, Redemption, Period Two |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Threshold trading days | d |  | 5 |  |  |  |
Consecutive trading days | d |  | 10 |  |  |  |
Maximum threshold of debt trading price trigger (as a percent) |  | 98.00% |  |  |  |

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