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Stockholders' Equity (Details 2) - USD ($) $ in Thousands, shares in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2021 | Dec. 31, 2020 | Jun. 30, 2021
Accelerated share repurchases |  |  |
Repurchase and retirement of common stock under repurchase program | $ 100,068 |  | $ 100,068
2020 Accelerated share repurchase program |  |  |
Accelerated share repurchases |  |  |
Accelerated share repurchase program, upfront payment |  | $ 50,000 |
Repurchase and retirement of common stock under repurchase program, shares | (0.1) | (2.6) |
Repurchase and retirement of common stock under repurchase program |  | $ (40,000) |
Remaining initial payment, unsettled forward contract indexed to Company's stock |  | $ 10,000 |
2021 Accelerated share repurchase program |  |  |
Accelerated share repurchases |  |  |
Accelerated share repurchase program, upfront payment | $ 100,000 |  |
Repurchase and retirement of common stock under repurchase program, shares | (3.9) |  |
Repurchase and retirement of common stock under repurchase program | $ (80,000) |  |
Remaining initial payment, unsettled forward contract indexed to Company's stock | $ 20,000 |  |

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