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Basic and Diluted Net Earnings Per Share - Additional Information (Detail)
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9 Months Ended | ||
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Sep. 30, 2014
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Sep. 30, 2013
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Dec. 31, 2013
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| Earnings Per Share [Abstract] | |||
| Options to purchase Class A common stock | 1,887,329 | 2,296,020 | 2,162,067 |
| Dilutive shares | 729,560 | 794,553 | |
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- Details
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- Definition
Number of options outstanding, including both vested and non-vested options. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The sum of dilutive potential common shares or units used in the calculation of the diluted per-share or per-unit computation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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