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Convertible Notes (Narrative) (Details) |  |  |  |  |  |  | 1 Months Ended | 3 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Aug. 25, 2022 $ / shares | Aug. 11, 2022 USD ($) | Apr. 01, 2022 USD ($) | Mar. 31, 2022 USD ($) | Mar. 02, 2022 USD ($) | Nov. 17, 2017 USD ($) D $ / shares | Mar. 29, 2022 $ / shares | Dec. 31, 2022 USD ($) $ / shares | Mar. 31, 2022 USD ($) | Dec. 31, 2022 USD ($) $ / shares | Dec. 31, 2021 USD ($) $ / shares | Dec. 31, 2020 USD ($) $ / shares | Jan. 01, 2022 USD ($)
Debt instrument |  |  |  |  |  |  |  |  |  |  |  |  |
Liabilities |  |  |  |  |  |  |  | $ (233,297,000) |  | $ (233,297,000) | $ (370,250,000) |  |
Accumulated deficit |  |  |  |  |  |  |  | (513,256,000) |  | (513,256,000) | (435,227,000) |  |
Loss on extinguishment of debt |  |  |  |  |  |  |  |  |  | 83,626,000 | 0 | $ 0 |
Loss on fair value adjustment of derivatives, net |  |  |  |  |  |  |  |  |  | 10,585,000 | 0 | $ 0 |
Convertible senior notes | Debt discount | Cumulative effect, period of adoption, adjustment | Accounting Standards Update 2020-06 |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument |  |  |  |  |  |  |  |  |  |  |  |  |
Additional paid in capital |  |  |  |  |  |  |  |  |  |  |  |  | $ 35,200,000
Liabilities |  |  |  |  |  |  |  |  |  |  |  |  | 8,300,000
Accumulated deficit |  |  |  |  |  |  |  |  |  |  |  |  | 26,900,000
Convertible senior notes | Debt issuance costs | Cumulative effect, period of adoption, adjustment | Accounting Standards Update 2020-06 |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument |  |  |  |  |  |  |  |  |  |  |  |  |
Additional paid in capital |  |  |  |  |  |  |  |  |  |  |  |  | 700,000
Accumulated deficit |  |  |  |  |  |  |  |  |  |  |  |  | $ 500,000
1.375% Convertible senior notes due 2023 | Convertible senior notes |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument |  |  |  |  |  |  |  |  |  |  |  |  |
Face value |  |  |  |  |  | $ 172,500,000 |  | $ 10,381,000 |  | $ 10,381,000 | $ 172,500,000 |  |
Liability component, principal amount |  |  |  |  |  | 137,300,000 |  |  |  |  |  |  |
Equity component, principal amount |  |  |  |  |  | $ 35,200,000 |  |  |  |  |  |  |
Debt discount amortization period |  |  |  |  |  | 5 years |  |  |  |  |  |  |
Convertible notes, stated interest rate (as a percentage) |  |  |  |  |  | 1.375% |  | 1.375% |  | 1.375% | 1.375% | 1.375% |
Debt issuance costs, gross |  |  |  |  |  | $ 3,300,000 |  |  |  |  |  |  |
Debt issuance cost, convertible, liability component |  |  |  |  |  | 2,600,000 |  |  |  |  |  |  |
Debt issuance cost, convertible, equity component |  |  |  |  |  | $ 700,000 |  |  |  |  |  |  |
Conversion rate, number of shares to be issued per $1000 of principal (in shares) |  |  |  |  |  | 52.8318 |  |  |  |  |  |  |
Principal amount of notes used as the denominator to determine number of shares converted into notes |  |  |  |  |  | $ 1,000 |  |  |  |  |  |  |
Initial conversion price of notes (in dollars per share) | $ / shares |  |  |  |  |  | $ 18.93 |  | $ 18.93 |  | $ 18.93 | $ 18.93 | $ 18.93 |
Debt instrument, convertible, threshold trading days |  |  |  |  |  | 20 |  |  |  |  |  |  |
Debt Instrument, Convertible, Threshold Consecutive Trading Days | D |  |  |  |  |  | 30 |  |  |  |  |  |  |
Debt instrument, convertible, threshold percentage of stock price trigger |  |  |  |  |  | 130.00% |  |  |  |  |  |  |
Number of consecutive trading days before the five business days during the debt instrument measurement period |  |  |  |  |  | 5 days |  |  |  |  |  |  |
Denomination of the principal amount of notes used to calculate the percent of trading price during the debt instrument measurement period |  |  |  |  |  | $ 1,000 |  |  |  |  |  |  |
Maximum conversion price as a percentage of closing stock price |  |  |  |  |  | 98.00% |  |  |  |  |  |  |
Percentage of face amount of debt instrument redeemable at the company's option |  |  |  |  |  | 100.00% |  |  |  |  |  |  |
Repurchased convertible debt, face amount |  |  |  |  |  |  |  | $ 162,100,000 |  | $ 162,100,000 |  |  |
Events of default |  |  |  |  |  |  |  |  |  |  |  |  |
Period of default in payment of interest (in days) |  |  |  |  |  | 30 days |  |  |  |  |  |  |
Period of default to comply with other agreements (in days) |  |  |  |  |  | 60 days |  |  |  |  |  |  |
Minimum percentage of aggregate outstanding principal required for default event with other agreements |  |  |  |  |  | 25.00% |  |  |  |  |  |  |
Minimum principal amount of debt nonpayment required for debt default to occur |  |  |  |  |  | $ 40,000,000 |  |  |  |  |  |  |
Period of nonpayment of principal amount required for debt default to occur (in days) |  |  |  |  |  | 30 days |  |  |  |  |  |  |
Minimum percentage of aggregate outstanding principal required for nonpayment of debt default to occur |  |  |  |  |  | 25.00% |  |  |  |  |  |  |
Minimum percentage of aggregate outstanding principal required for immediate payment declaration to occur |  |  |  |  |  | 25.00% |  |  |  |  |  |  |
Debt Instrument, Default Percent Of Principal And Accrued And Unpaid Interest |  |  |  |  |  | 100.00% |  |  |  |  |  |  |
1.375% Convertible senior notes due 2023 | Convertible senior notes | 2023 Notes Partial Repurchase, first quarter 2022 |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument |  |  |  |  |  |  |  |  |  |  |  |  |
Repayments of Convertible Debt |  |  |  | $ 174,500,000 | $ 199,100,000 |  |  |  |  |  |  |  |
Repurchased convertible debt, face amount |  |  |  | $ 107,900,000 | $ 123,100,000 |  |  |  | $ 107,900,000 |  |  |  |
Debt, Volume Weighted Average Price | $ / shares |  |  |  |  |  |  | $ 29.6789 |  |  |  |  |  |
Loss on extinguishment of debt |  |  |  |  |  |  |  |  | 66,500,000 |  |  |  |
Loss on fair value adjustment of derivatives, net |  |  |  |  |  |  |  |  | $ 8,300,000 |  |  |  |
1.375% Convertible senior notes due 2023 | Convertible senior notes | 2023 Notes Partial Repurchase, first quarter 2022 | Remainder of 2023 Notes Partial Repurchase |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument |  |  |  |  |  |  |  |  |  |  |  |  |
Repayments of Convertible Debt |  |  | $ 24,600,000 |  |  |  |  |  |  |  |  |  |
Repurchased convertible debt, face amount |  |  | $ 15,200,000 |  |  |  |  |  |  |  |  |  |
1.375% Convertible senior notes due 2023 | Convertible senior notes | 2023 Notes Partial Repurchase, third quarter 2022 |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument |  |  |  |  |  |  |  |  |  |  |  |  |
Repayments of Convertible Debt |  | $ 58,900,000 |  |  |  |  |  |  |  |  |  |  |
Repurchased convertible debt, face amount |  | $ 39,000,000 |  |  |  |  |  |  |  |  |  |  |
Debt, Volume Weighted Average Price | $ / shares | $ 27.8456 |  |  |  |  |  |  |  |  |  |  |  |
Loss on extinguishment of debt |  |  |  |  |  |  |  | 17,100,000 |  |  |  |  |
Loss on fair value adjustment of derivatives, net |  |  |  |  |  |  |  | $ 2,300,000 |  |  |  |  |

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- Definition Represents the percentage of the trading price of each debt instrument to the conversion value of the debt instrument that the trading price must be less than in order for the debt instruments to be convertible. + References No definition available. + Details
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- Definition The principal amount of debt used as the denominator to determine the number of shares that the debt can be converted into at the exchange rate. + References No definition available. + Details
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- Definition Amount of excess of issue price over par or stated value of stock and from other transaction involving stock or stockholder. Includes, but is not limited to, additional paid-in capital (APIC) for common and preferred stock. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 852 -SubTopic 10 -Section 55 -Paragraph 10 -URI https://asc.fasb.org/extlink&oid=84165509&loc=d3e56426-112766 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(30)(a)(1)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition The carrying amount of the equity component of convertible debt which may be settled in cash upon conversion. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=123466204&loc=SL6031897-161870 + Details
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- Definition Threshold period of specified consecutive trading days within which common stock price to conversion price of convertible debt instrument must exceed threshold percentage for specified number of trading days to trigger conversion feature. + References No definition available. + Details
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- Definition Minimum percentage of common stock price to conversion price of convertible debt instruments to determine eligibility of conversion. + References No definition available. + Details
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- Definition Threshold number of specified trading days that common stock price to conversion price of convertible debt instruments must exceed threshold percentage within a specified consecutive trading period to trigger conversion feature. + References No definition available. + Details
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