DISCONTINUED OPERATIONS - Summary of the financial results of the discontinued operations (Details) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Operating expenses:      
(Loss) income from discontinued operations, net of income taxes $ (1,380) $ 132 $ 294
Discontinued operation | BNI Solutions, Inc. Digilog, Inc. and DCX Systems, Inc
      
Net sales:      
Subscription and support revenue 881 976 1,827
Embedded devices and hardware 282 732 612
Total net sales 1,163 1,708 2,439
Cost of sales, exclusive of depreciation and amortization shown below:      
Subscription and support revenue 396 403 768
Embedded devices and hardware 320 377 373
Gross profit 447 928 1,298
Operating expenses:      
Sales and marketing 741 420 715
General and administrative 212 139 120
Engineering and development 99 88 84
Depreciation and amortization 13 56 79
Goodwill impairment 949      
Operating (loss) income (1,567) 225 300
Income tax (benefit) expense (187) 93 6
(Loss) income from discontinued operations, net of income taxes $ (1,380) $ 132 $ 294