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Stockholders' Equity - Incentive and Other (Details) - USD ($) $ / shares in Units, $ in Thousands, shares in Millions | 3 Months Ended | 144 Months Ended |  |
--- | --- | --- | --- | ---
Mar. 31, 2019 | Mar. 31, 2018 | Mar. 31, 2019 | Aug. 10, 2018 | Mar. 29, 2007
Share Repurchase Program |  |  |  |  |
Share repurchase | $ 3,321 | $ 4,293 |  |  |
Stock Repurchase Program 2007 |  |  |  |  |
Share Repurchase Program |  |  |  |  |
Number of shares of outstanding common stock authorized to be acquired under a stock repurchase program | 8.8 |  | 8.8 | 0.7 | 1.0
Share repurchase (in shares) | 0.1 |  | 8.3 |  |
Average price (in dollars per share) | $ 49.27 |  | $ 16.51 |  |
Share repurchase | $ 3,300 |  |  |  |

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