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Discontinued Operations - Condensed Consolidated Statements of Cash Flows (Detail) (USD $)
In Thousands, unless otherwise specified
9 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]    
Net increase (decrease) in cash and cash equivalents $ 1,078 $ (455)
American Access Technologies, Inc.
   
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]    
Net cash (used in) operating activities (1,691) (264)
Net cash provided by (used in) investing activities 2,769 [1] (160) [1]
Net cash (used in) financing activities   (31)
Advances (to) from parent (1,078) 455
Net increase (decrease) in cash and cash equivalents $ 0 $ 0
[1] Includes sale proceeds of $2.3 million.