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Stockholders' Equity - Restricted Stock Purchased and Retired (Details) - Restricted Stock - USD ($) $ / shares in Units, $ in Thousands |  |  |  |  |  |  |  | 12 Months Ended
--- | --- | --- | --- | --- | --- | --- | --- | ---
Dec. 24, 2020 | May 20, 2020 | Mar. 30, 2020 | Dec. 31, 2019 | Nov. 30, 2019 | Oct. 31, 2019 | Sep. 30, 2019 | Dec. 31, 2020 | Dec. 31, 2019
Stockholders' Equity |  |  |  |  |  |  |  |  |
Total Number of Shares Purchased | 2,478 | 87,249 | 155,556 | 9,846 | 57,980 | 29,189 | 18,147 | 245,283 | 115,162
Actual Price Paid Per Share (in dollars per share) | $ 1.14 | $ 0.98 | $ 0.65 | $ 1.45 | $ 1.45 | $ 1.75 | $ 1.34 | $ 0.77 | $ 1.51
Fair value of Re-Purchased Shares | $ 3,000 | $ 85,000 | $ 102,000 | $ 14,000 | $ 84,000 | $ 51,000 | $ 25,000 | $ 190,000 | $ 174,000

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