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Stockholders' Equity - Securities Repurchase Program (Details) - USD ($) | 3 Months Ended |
--- | --- | ---
Mar. 31, 2021 | Mar. 31, 2020 | Jun. 30, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Stock repurchase program, authorized amount |  |  | $ 500,000,000.0
Repayments of convertible senior notes | $ 189,849,000 | $ 0 |
Remaining under repurchase program | 165,500,000 |  |
0.25% Convertible Senior Notes Due 2023 | Senior Notes |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Repayments of convertible senior notes | $ 4,700,000 |  |

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- Definition The cash outflow from the repayment of a long-term debt instrument which can be exchanged for a specified amount of another security, typically the entity's common stock, at the option of the issuer or the holder. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3291-108585 + Details
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