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Acquisitions - Pro Forma Financial Information for Nexgen (Detail) - Nexgen Wireless, Inc. [Member]
$ / shares in Units, $ in Thousands
6 Months Ended
Jun. 30, 2015
USD ($)
$ / shares
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]  
REVENUES $ 56,909
NET INCOME $ 412
Net Income per Share | $ / shares $ 0.02