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SELECTED QUARTERLY FINANCIAL DATA (UNAUDITED) (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2017 | Sep. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2016 | Sep. 30, 2016 | Jun. 30, 2016 | Mar. 31, 2016 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
SELECTED QUARTERLY FINANCIAL DATA (UNAUDITED) |  |  |  |  |  |  |  |  |  |  |
Net Revenues | $ 56,056 | $ 63,027 | $ 58,229 | $ 53,414 | $ 55,596 | $ 57,109 | $ 54,578 | $ 49,749 | $ 230,726 | $ 217,032 | $ 202,245
Operating expenses | 47,919 | 49,777 | 46,676 | 45,688 | 45,404 | 44,857 | 45,633 | 42,590 | 190,060 | 178,484 | 169,690
Income from operations | 8,137 | 13,250 | 11,553 | 7,726 | 10,192 | 12,252 | 8,945 | 7,159 | 40,666 | 38,548 | 32,555
Net income | $ 4,397 | $ 9,030 | $ 7,239 | $ 4,872 | $ 6,470 | $ 7,834 | $ 5,695 | $ 4,575 | $ 25,538 | $ 24,574 | $ 20,659
Earnings per share of common stock |  |  |  |  |  |  |  |  |  |  |
Basic (in dollars per share) | $ 0.25 | $ 0.51 | $ 0.41 | $ 0.28 | $ 0.37 | $ 0.45 | $ 0.33 | $ 0.27 | $ 1.45 | $ 1.42 | $ 1.22
Diluted (in dollars per share) | $ 0.23 | $ 0.49 | $ 0.40 | $ 0.27 | $ 0.36 | $ 0.45 | $ 0.32 | $ 0.26 | $ 1.39 | $ 1.39 | $ 1.19
Enactment of the Tax Cuts and Jobs Act in 2017 |  |  |  |  |  |  |  |  |  |  |
Negative effect on Net income from Deferred tax asset revaluation | $ 1,500 |  |  |  |  |  |  |  | $ 1,461 |  |
Negative effect on Basic and Diluted EPS from Deferred tax asset revaluation (in dollars per share) | $ 0.08 |  |  |  |  |  |  |  |  |  |

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- Definition The increase (decrease) in net income or loss for the period per each share in instances when basic and diluted earnings per share are the same for the amount of reasonable estimate for income tax expense (benefit) for remeasurement of deferred tax from change in tax rate pursuant to Tax Cuts and Jobs Act of 2017 for which accounting for tax effect is incomplete. + References No definition available. + Details
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