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Stockholders' Equity (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 6 Months Ended | 11 Months Ended | 12 Months Ended | 26 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Jun. 30, 2021 | Mar. 31, 2021 | Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2020 | Aug. 06, 2020 | Jun. 10, 2014 | Feb. 29, 2012
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Repayments of long-term debt |  |  | $ 2,802 | $ 0 |  |  |  |  |  |  |  |
Number of shares purchased from plan participants (in shares) | 87,155 |  |  |  |  |  |  |  |  |  |  |
Dividend per common share (in usd per share) |  | $ 0 | $ 0 |  |  |  |  |  |  |  |  |
Common stock |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Exercise of 3.25% Convertible Note (in shares) | 19,033 |  | 19,033 |  |  |  |  |  |  |  |  |
3.25% Convertible Notes | Convertible Debt |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Stated interest rate |  |  |  |  |  |  |  |  |  |  | 3.25% |
Repayments of long-term debt | $ 2,800 |  |  |  |  |  |  |  |  |  |  |
2012 Repurchase Program |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Maximum number of shares authorized to be repurchased (in shares) |  |  |  |  |  |  |  |  |  |  |  | 5,000,000
Shares repurchased under the program (in shares) |  |  |  |  |  | 1,140,819 | 197,870 | 600,000 |  |  |  |
Aggregate cost of shares repurchased |  |  |  |  |  | $ 87,500 | $ 16,000 | $ 42,500 | $ 204,600 |  |  |
2020 Repurchase Program |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Maximum number of shares authorized to be repurchased (in shares) |  |  |  |  |  |  |  |  |  | 10,000,000,000,000 |  |
Shares repurchased under the program (in shares) |  |  | 0 |  | 2,490,599 |  |  |  |  |  |  |
Aggregate cost of shares repurchased |  |  |  |  | $ 177,800 |  |  |  |  |  |  |

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