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Consolidated Statements of Operations - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Sales    
Hardware $ 2,850 $ 5,020
Services and other 8,621 8,398
Total sales 11,471 13,418
Cost of sales    
Hardware 2,725 4,606
Services and other 5,144 5,446
Total cost of sales (exclusive of depreciation and amortization shown separately below) 7,869 10,052
Gross profit 3,602 3,366
Operating expenses:    
Sales and marketing expenses 1,114 1,179
Research and development expenses 804 492
General and administrative expenses 6,947 5,764
Depreciation and amortization expense 2,027 817
Total operating expenses 10,892 8,252
Operating loss (7,290) (4,886)
Other income (expenses):    
Interest expense (1,286) (32)
Other expense (114) (8)
Change in fair value of warrant liability 1,081 1,127
Total other income/(expense) (319) 1,087
Net loss before income taxes (7,609) $ (3,799)
Provision for income taxes (358)
Net loss (7,967) $ (3,799)
Dividends on preferred stock 344 1,215
Net loss attributable to common shareholders $ (8,311) $ (5,014)
Net loss per common share - basic and diluted    
Net loss $ (0.16) $ (0.11)
Net loss attributable to common shareholders $ (0.17) $ (0.14)
Weighted average shares outstanding - basic and diluted 49,790 34,986