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Stock Repurchase Program (Details) - USD ($) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017 | Aug. 02, 2016
Equity, Class of Treasury Stock [Line Items] |  |  |  |
Number of shares repurchased (in shares) | 0 | 0 | 0 |
The 2016 Repurchase Program |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |
Value of shares authorized for repurchase under stock repurchase programs |  |  |  | $ 50,000,000.0
2016 and 2014 Share Repurchase Programs |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |
Remaining value of shares authorized for repurchase under stock repurchase programs | $ 54,900,000 |  |  |

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