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Debt - Summary of Convertible Debt (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020
Debt Instrument [Line Items] |  |  |  |
Repurchase of convertible senior notes |  |  | $ 145,656 | $ 194,670
(Gain) loss on extinguishment of debt: |  |  |  |
Gain (loss) on extinguishment of debt | $ (931) | $ 6,391 | (2,334) | 6,391
Convertible senior notes |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Aggregate principal amount settled | 19,147 |  | 71,890 |
Repurchase of convertible senior notes | $ 0 |  | $ 0 |
Shares of Class C capital stock issued (in shares) | 387,431 |  | 1,590,151 |
Total fair value of consideration transferred | $ 54,634 |  | $ 214,406 |
(Gain) loss on extinguishment of debt: |  |  |  |
Consideration allocated to liability component | 16,655 |  | 59,646 |
Carrying value of the liability component, net of unamortized debt discount and debt issuance costs | 15,724 |  | 57,312 |
Gain (loss) on extinguishment of debt | 931 |  | 2,334 |
Consideration allocated to the equity component | 37,979 |  | 154,760 |
2023 Notes | Convertible senior notes |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Aggregate principal amount settled | 5,147 |  | 6,072 |
Repurchase of convertible senior notes | $ 0 |  | $ 0 |
Shares of Class C capital stock issued (in shares) | 65,669 |  | 77,458 |
Total fair value of consideration transferred | $ 8,081 |  | $ 9,724 |
(Gain) loss on extinguishment of debt: |  |  |  |
Consideration allocated to liability component | 4,807 |  | 5,648 |
Carrying value of the liability component, net of unamortized debt discount and debt issuance costs | 4,619 |  | 5,437 |
Gain (loss) on extinguishment of debt | 188 |  | 211 |
Consideration allocated to the equity component | 3,274 |  | 4,076 |
2024 Notes | Convertible senior notes |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Aggregate principal amount settled | 14,000 |  | 64,618 |
Repurchase of convertible senior notes | $ 0 |  | $ 0 |
Shares of Class C capital stock issued (in shares) | 321,762 |  | 1,485,114 |
Total fair value of consideration transferred | $ 46,553 |  | $ 200,478 |
(Gain) loss on extinguishment of debt: |  |  |  |
Consideration allocated to liability component | 11,848 |  | 53,115 |
Carrying value of the liability component, net of unamortized debt discount and debt issuance costs | 11,105 |  | 51,032 |
Gain (loss) on extinguishment of debt | 743 |  | 2,083 |
Consideration allocated to the equity component | $ 34,705 |  | 147,363 |
2026 Notes | Convertible senior notes |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Aggregate principal amount settled |  |  | 1,200 |
Repurchase of convertible senior notes |  |  | $ 0 |
Shares of Class C capital stock issued (in shares) |  |  | 27,579 |
Total fair value of consideration transferred |  |  | $ 4,204 |
(Gain) loss on extinguishment of debt: |  |  |  |
Consideration allocated to liability component |  |  | 883 |
Carrying value of the liability component, net of unamortized debt discount and debt issuance costs |  |  | 843 |
Gain (loss) on extinguishment of debt |  |  | 40 |
Consideration allocated to the equity component |  |  | $ 3,321 |
2021 Notes | Convertible senior notes |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Aggregate principal amount settled |  | 194,670 |  | 194,670
Repurchase of convertible senior notes |  | $ 194,670 |  | $ 194,670
Shares of Class C capital stock issued (in shares) |  | 753,936 |  | 753,936
Total fair value of consideration transferred |  | $ 230,859 |  | $ 230,859
(Gain) loss on extinguishment of debt: |  |  |  |
Consideration allocated to liability component |  | 172,886 |  | 172,886
Carrying value of the liability component, net of unamortized debt discount and debt issuance costs |  | 179,277 |  | 179,277
Gain (loss) on extinguishment of debt |  | (6,391) |  | (6,391)
Consideration allocated to the equity component |  | $ 57,973 |  | $ 57,973

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- Definition The number of shares issued in exchange for the original debt being converted in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or payments in the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=123431023&loc=d3e4332-108586 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=123431023&loc=d3e4304-108586 + Details
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