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v3.21.2

Credit Facility and Other Long Term Debt - Senior Notes, Capped Call Transaction and Interest Expense (Details) $ / shares in Units, shares in Millions | 1 Months Ended | 3 Months Ended | 9 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | ---
Aug. 31, 2021 USD ($) shares | May 31, 2021 USD ($) shares | May 31, 2020 USD ($) d $ / shares | Sep. 30, 2021 USD ($) | Sep. 30, 2021 USD ($) | Sep. 30, 2020 USD ($) | Dec. 31, 2020 USD ($) | Sep. 30, 2016 USD ($) | Jun. 30, 2016 USD ($)
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Repayment of credit facility |  |  | $ 439,900,000 |  |  |  |  |  |
Loss on conversion of notes |  |  |  |  | $ 58,526,000 | $ 0 |  |  |
Proceeds from option contract termination | $ 38,600,000 | $ 53,000,000 |  |  |  |  |  |  |
Effective interest rate,percentage |  |  |  | 6.80% | 6.80% |  |  |  |
1.50% Convertible Senior Notes |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Stated interest rate, percentage |  |  | 1.50% |  |  |  |  |  |
Aggregate principal |  |  | $ 500,000,000 | $ 80,900,000 | $ 80,900,000 |  |  |  |
Proceeds from debt offering |  |  | 488,800,000 |  |  |  |  |  |
Payment of cap call transaction |  |  | $ 47,900,000 |  |  |  |  |  |
Convertible notes exchanged | 169,100,000 | 250,000,000 |  | 169,000,000 | 419,000,000 |  |  |  |
Repayments of convertible notes | $ 207,000,000 | $ 300,000,000 |  |  |  |  |  |  |
Loss on conversion of notes |  |  |  | $ 23,800,000 | $ 58,500,000 |  |  |  |
Initial conversion rate |  |  | 0.1018589 |  |  |  |  |  |
Debt conversion price (in usd per share) | $ / shares |  |  | $ 9.82 |  |  |  |  |  |
Trading days (whether or not consecutive) | d |  |  | 20 |  |  |  |  |  |
Consecutive trading days | d |  |  | 30 |  |  |  |  |  |
Percentage of stock price |  |  | 130.00% |  |  |  |  |  |
Business period |  |  | 5 days |  |  |  |  |  |
Measurement period |  |  | 5 days |  |  |  |  |  |
Measurement period, percentage |  |  | 98.00% |  |  |  |  |  |
Redemption price, percentage of principal repurchased |  |  | 100.00% |  |  |  |  |  |
Cap call transaction cap price per share (in usd per share) | $ / shares |  |  | $ 13.4750 |  |  |  |  |  |
Premium over last reported sale price, percentage |  |  | 75.00% |  |  |  |  |  |
Deferred financing costs |  |  | $ 10,000,000 |  |  |  |  |  |
1.50% Convertible Senior Notes | Additional Paid-in Capital |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Deferred financing costs |  |  | 2,200,000 |  |  |  |  |  |
1.50% Convertible Senior Notes | Senior Notes |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Deferred financing costs |  |  | $ 12,300,000 |  |  |  |  |  |
1.50% Convertible Senior Notes | Class C Common Stock |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Stock issued in exchange of convertible notes (shares) | shares | 7.7 | 11.1 |  |  |  |  |  |  |
3.25% Senior Notes | Senior Notes |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Stated interest rate, percentage |  |  |  | 3.25% | 3.25% |  |  |  | 3.25%
Aggregate principal |  |  |  |  |  |  |  |  | $ 600,000,000
Deferred financing costs |  |  |  | $ 2,536,000 | $ 2,536,000 | $ 3,074,000 | $ 2,940,000 | $ 5,400,000 |

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