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Property and Equipment
9 Months Ended
Sep. 30, 2011
Property and Equipment [Abstract] 
PROPERTY AND EQUIPMENT
(4) PROPERTY AND EQUIPMENT
                         
    Estimated              
    Depreciable     September 30,     December 31,  
    Lives (years)     2011     2010  
            (In thousands)  
Leasehold improvements
    3 - 10     $ 377     $ 370  
Automobiles
    4 - 6       346       382  
Computer and telecommunications equipment
    2 - 5       1,270       1,223  
Test equipment
    3 - 7       170       180  
Furniture and fixtures
    2 - 10       3,048       2,939  
 
                   
 
            5,211       5,094  
Less accumulated depreciation
            (3,894 )     (3,706 )
 
                   
Total property and equipment, net
          $ 1,317     $ 1,388