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Stockholders' Equity - Narrative (Details) - USD ($) $ in Thousands | 1 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Jan. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Aug. 06, 2020 | Dec. 31, 2017 | Feb. 29, 2012
Class of Stock [Line Items] |  |  |  |  |  |  |  |
Number of remaining shares available for purchase (in shares) |  | 7,063,690 |  |  |  |  |  |
Repurchase of shares of common stock |  | $ 47,741 |  |  |  |  |  |
Number of shares purchased from plan participants (in shares) |  | 251,946 | 111,451 | 71,077 |  |  |  |
3.25% Convertible Notes | Convertible Debt |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |
Conversion shares issued as extinguishment cost on 3.25% convertible notes (in shares) |  | 3,050,850 |  |  |  |  |  |
2012 Repurchase Program |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |
Maximum number of shares authorized to be repurchased (in shares) |  |  |  |  |  |  |  | 5,000,000
Number of remaining shares available for purchase (in shares) |  |  |  |  |  |  | 2,873,920 |
Repurchased shares, aggregate amount |  |  | $ 204,600 |  |  |  |  |
Shares repurchased under the program (in shares) |  |  | 1,140,819 | 197,870 | 600,000 |  |  |
Repurchase of shares of common stock |  |  | $ 87,500 | $ 16,000 | $ 42,500 |  |  |
2020 Repurchase Program |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |
Maximum number of shares authorized to be repurchased (in shares) |  |  |  |  |  | 10,000,000 |  |
Shares repurchased under the program (in shares) |  | 445,711 | 2,490,599 |  |  |  |  |
Repurchase of shares of common stock |  | $ 47,700 | $ 177,800 |  |  |  |  |
2020 Repurchase Program | Subsequent Event |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |
Shares repurchased under the program (in shares) | 554,289 |  |  |  |  |  |  |
Repurchase of shares of common stock | $ 58,700 |  |  |  |  |  |  |

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