DISCONTINUED OPERATIONS - Summary of the financial results of the discontinued operations (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Sep. 30, 2013
Sep. 30, 2012
Operating expenses:        
Loss from discontinued operations, net of income taxes $ 0 $ (159) $ (1,437) $ (106)
Discontinued operations | BNI Solutions, Inc. Digilog, Inc. and DCX Systems, Inc.
       
Net sales:        
Subscription and support revenue 189 172 693 632
Embedded devices and hardware 188 313 267 688
Total net sales 377 485 960 1,320
Cost of sales, exclusive of depreciation and amortization shown below:        
Subscription and support revenue 77 101 291 312
Embedded devices and hardware 90 129 276 297
Gross profit 210 255 393 711
Operating expenses:        
Sales and marketing 29 102 708 355
General and administrative 32 37 181 107
Engineering and development 22 21 73 66
Depreciation and amortization 2 18 9 53
Operating income (loss) 125 77 (578) 130
Goodwill impairment     949  
Income tax expense (benefit) 125 236 (90) 236
Loss from discontinued operations, net of income taxes    $ (159) $ (1,437) $ (106)