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Stock-Based Compensation - Stock Options (Details) - USD ($) | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Number of Stock Options |  |  |
Balance at the beginning of the period (in shares) | 87,497 |  |
Expired (in shares) | (87,497) |  |
Balance at the end of the period (in shares) |  | 87,497 |
Weighted Average Exercise Price |  |  |
Balance at the beginning of the period (in dollars per share) | $ 11.23 |  |
Expired (in dollars per share) | $ 11.23 |  |
Balance at the end of the period (in dollars per share) |  | $ 11.23 |
Options granted (in shares) | 0 | 0 | 0
Options vested (in shares) | 0 | 0 | 0
Excess tax benefits from disqualifying dispositions | $ 0 | $ 0 | $ 0
Options exercised (in shares) | 0 | 0 | 0
Proceeds from exercise of stock options | $ 0 | $ 0 | $ 0
Stock options |  |  |
Weighted Average Exercise Price |  |  |
Unrecognized compensation expense related to share-based compensation plans | $ 0 |  |

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