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Shareholders Equity - Purchases of Equity Shares (Details) - USD ($) $ / shares in Units, $ in Millions |  |  | 1 Months Ended | 6 Months Ended |
--- | --- | --- | --- | --- | ---
Jan. 01, 2021 | May 20, 2019 | Jun. 30, 2021 | May 31, 2021 | Apr. 30, 2021 | Mar. 31, 2021 | Feb. 28, 2021 | Jun. 30, 2021 | Dec. 31, 2020
Shareholders' Equity |  |  |  |  |  |  |  |  |
Authorized shares to be repurchased | 1,193,000 | 1,367,762 | 928,785 |  |  |  |  | 928,785 | 1,193,000
Shares repurchased as a percentage of outstanding common shares | 5.00% | 5.00% |  |  |  |  |  |  |
Authorized amount repurchase |  | $ 5.0 |  |  |  |  |  |  |
Number of shares purchased |  |  | 13,800 | 63,900 | 63,315 | 60,800 | 62,400 | 264,215 |
Average price paid per share |  |  | $ 4.77 | $ 4.02 | $ 3.89 | $ 3.92 | $ 4.07 | $ 4.02 |

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