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Net Income Per Share of Common Stock | 9 Months Ended
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Sep. 30, 2018
Net Income Per Share of Common Stock [Abstract] |
Net Income Per Share of Common Stock | Net Income Per Share of Common Stock Basic net income per share is based on the weighted average number of shares of common stock outstanding during the period, which does not include unvested restricted common stock subject to forfeiture of 5,891,000 and 5,886,000 shares for the three and nine months ended September 30, 2018, respectively, compared to 6,327,000 and 6,345,000 shares for the three and nine months ended September 30, 2017, respectively. Diluted net income per share reflects: (a) the potential dilution assuming shares of common stock were issued upon the exercise of outstanding in-the-money options and the proceeds thereof were used to purchase shares of the Company’s common stock at the average market price during the period, and (b) the vesting of granted non-vested restricted stock awards for which the assumed proceeds upon vesting are deemed to be the amount of compensation cost not yet recognized attributable to future services using the treasury stock method, to the extent dilutive. For the three and nine months ended September 30, 2018, approximately 0 and 102,000 shares of common stock, respectively, have been excluded from the calculation of diluted net income per share as compared to 0 and 75,000 shares that were excluded for the three and nine months ended September 30, 2017, as the result would have been antidilutive. For the three and nine months ended September 30, 2018 and 2017, all unvested restricted stock awards were dilutive.

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -URI http://asc.fasb.org/topic&trid=2144383 + Details
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