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Condensed Consolidated Statements of Operations (Unaudited) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Sales    
Hardware $ 1,231 $ 561
Services and other 2,835 5,858
Total sales 4,066 6,419
Cost of sales    
Hardware 1,100 564
Services and other 1,457 3,008
Total cost of sales (exclusive of depreciation and amortization shown below) 2,557 3,572
Gross profit 1,509 2,847
Operating expenses:    
Sales and marketing expenses 503 418
Research and development expenses 321 157
General and administrative expenses 1,703 1,747
Depreciation and amortization expense 327 402
Lease termination expense 474
Total operating expenses 3,328 2,724
Operating income/(loss) (1,819) 123
Other income (expenses):    
Interest expense (574) (410)
Change in fair value of warrant liability 197 (8)
Gain on settlement of debt 866
Other income/(expense) 4
Total other income/(expense) (373) 448
Income/(loss) before income taxes (2,192) 571
Provision for income taxes (46) (79)
Net income/(loss) (2,238) 492
Dividends on preferred stock (111) (113)
Net income/(loss) attributable to common shareholders $ (2,349) $ 379
Basic earnings/(loss) per common share $ (0.03) $ 0.01
Diluted earnings/(loss) per common share $ (0.03) $ 0.01
Weighted average shares outstanding - basic 82,582 67,112
Weighted average shares outstanding - diluted 82,582 67,112