Long-Term Debt - Capped Called Transactions (Details) - USD ($) |
3 Months Ended | |
|---|---|---|
Mar. 31, 2021 |
Mar. 31, 2020 |
|
| Line of Credit Facility [Line Items] | ||
| Premiums paid on capped call transactions | $ 14,688,000 | $ 0 |
| Convertible Senior Notes Due 2028 | Convertible Notes Payable | ||
| Line of Credit Facility [Line Items] | ||
| Debt instrument conversion strike price | $ 6.28 | |
| Debt instrument conversion cap price | $ 8.4525 | |
| Premiums paid on capped call transactions | $ 14,700,000 | |