Segment Information (Tables)
6 Months Ended
Jun. 30, 2012
Segment Information [Abstract]  
Revenues And Operating Income By Reportable Segment
  Three Months Ended Six Months Ended
  June 30, June 30,
(In thousands) 2012 2011 2012 2011
Net revenues:                        
M2M Services $ 16,009   $ 14,151   $ 30,472   $ 27,619  
Other Services   347     222     416     523  
  $ 16,356   $ 14,373   $ 30,888   $ 28,142  
Operating earnings (loss):                        
M2M Services $ 4,510   $ 3,780   $ 8,778   $ 7,276  
Other Services   160     (21 )   131     (27 )
Unallocated Corporate   (3,893 )   (3,397 )   (7,729 )   (6,617 )
  $ 777   $ 362   $ 1,180   $ 632  
Depreciation and amortization:                        
M2M Services $ 614   $ 621   $ 1,248   $ 1,254  
Other Services   18     20     36     40  
Unallocated Corporate   146     125     309     247  
  $ 778   $ 766   $ 1,593   $ 1,541  
Identifiable Assets
(In thousands) June 30, December 31
Identifiable assets: 2012 2011
M2M Services $ 50,218 $ 47,985
Other Services   1,977   1,779
Unallocated Corporate   10,127   11,664
  $ 62,322 $ 61,428