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Stockholders' Equity (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2018 | Mar. 31, 2018 | Sep. 30, 2017 | Mar. 31, 2017 | Sep. 30, 2018 | Sep. 30, 2017
Stockholders' Equity Note [Abstract] |  |  |  |  |  |
Aggregate number of shares repurchased during the period (in shares) |  |  |  |  | 211,972 |
Shares repurchased under the program (in shares) |  |  |  |  | 80,000 |
Authorized to repurchased additional shares under repurchase program (in shares) | 2,597,564 |  |  |  | 2,597,564 |
Shares withheld for tax withholding obligations for the vesting of restricted stock awards (in shares) |  |  |  |  | 131,972 |
Dividends declared per share of common stock (in dollars per share) | $ 0.20 | $ 0.20 | $ 0.150 | $ 0.125 |  |
Dividends paid |  |  |  |  | $ 25,170 | $ 17,831

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- Definition Aggregate dividends declared during the period for each share of common stock outstanding. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 + Details
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- Definition The remaining number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan. + References No definition available. + Details
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