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Unaudited Supplemental Pro Forma Information (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2014 | Sep. 30, 2013 | Sep. 30, 2014 | Sep. 30, 2013
Business Combination, Separately Recognized Transactions [Line Items] |  |  |  |
Total revenue | $ 15,278 | $ 20,519 | $ 50,937 | $ 57,862
Net income | $ 1,848 | $ 6,162 | $ 9,890 | $ 12,194
Earnings per share: |  |  |  |
Basic | $ 0.04 | $ 0.20 | $ 0.29 | $ 0.44
Diluted | $ 0.04 | $ 0.20 | $ 0.28 | $ 0.43

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