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Pro Forma Results of Combined Company Operations (Detail) (USD $) | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2013 | Jun. 30, 2012 | Jun. 30, 2013 | Jun. 30, 2012
Business Acquisition Pro Forma Information [Abstract] |  |  |  |
Total Revenues | $ 205,830 | $ 199,864 | $ 401,276 | $ 411,546
Net income | $ 4,430 | $ 6,009 | $ 2,648 | $ 6,010
Income per share |  |  |  |
Basic | $ 0.11 | $ 0.15 | $ 0.07 | $ 0.15
Diluted | $ 0.11 | $ 0.15 | $ 0.07 | $ 0.15

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