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Discontinued Operations - Condensed Consolidated Statements of Cash Flows (Detail) (USD $)
In Thousands, unless otherwise specified
6 Months Ended
Jun. 30, 2014
Jun. 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 $ (394) $ (294)
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 (260) (82)
Net cash (used in) investing activities (14) (117)
Net cash (used in) financing activities   (54)
Net increase (decrease) in cash and cash equivalents $ (274) $ (253)