Quarterly report pursuant to Section 13 or 15(d)

Acquisitions - Summary of Pro Forma Information (Detail)

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Acquisitions - Summary of Pro Forma Information (Detail) - USD ($)
$ in Thousands
6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Business Combinations [Abstract]    
Total Revenue $ 38,648 $ 36,873
Net Income $ 6,492 $ 5,390