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Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands | Total | Preferred Stock [Member] | Common Stock [Member] | Additional Paid-in Capital [Member] | Accumulated Comprehensive Deficit [Member]
--- | --- | --- | --- | --- | ---
BALANCE at Dec. 31, 2014 | $ 14,902 |  | $ 45 | $ 223,141 | $ (208,284)
BALANCE, Shares at Dec. 31, 2014 |  |  | 45,000,000 |  |
Exercise of common stock options | $ 10 |  |  | 10 |
Exercise of common stock options, shares | 2,000 |  | 8,000 |  |
Non-cash compensation recognized on stock options and ESPP | $ 186 |  |  | 186 |
Restricted stock grants, net of cancellations | 1,967 |  | $ 1 | 1,966 |
Restricted stock grants, net of cancellations, shares |  |  | 1,091,000 |  |
Cancellation of shares for payment of withholding tax | (458) |  |  | (458) |
Cancellation of shares for payment of withholding tax, shares |  |  | (394,000) |  |
Tax benefit deficiencies related to restricted stock expense | 5 |  |  | 5 |
Employee stock purchase plan | 17 |  |  | 17 |
Employee stock purchase plan, shares |  |  | 24,000 |  |
Comprehensive loss | (2,603) |  |  |  | (2,603)
BALANCE at Dec. 31, 2015 | 14,026 |  | $ 46 | 224,867 | (210,887)
BALANCE, Shares at Dec. 31, 2015 |  |  | 45,729,000 |  |
Non-cash compensation recognized on stock options and ESPP | 137 |  |  | 137 |
Restricted stock grants, net of cancellations | 1,391 |  |  | 1,391 |
Restricted stock grants, net of cancellations, shares |  |  | 366,000 |  |
Cancellation of shares for payment of withholding tax | (304) |  |  | (304) |
Cancellation of shares for payment of withholding tax, shares |  |  | (126,000) |  |
Employee stock purchase plan | 13 |  |  | 13 |
Employee stock purchase plan, shares |  |  | 7,000 |  |
Shares issued for iMobileMagic acquisition | 1,737 |  |  | 1,737 |
Shares issued for iMobileMagic acquisition, shares |  |  | 611,000 |  |
Shares issued for interest on notes payable | 17 |  |  | 17 |
Shares issued for interest on notes payable, shares |  |  | 8,000 |  |
Effects of reverse stock split | (3) |  | $ (34) | 31 |
Effects of reverse stock split, shares |  |  | (34,297,000) |  |
Issuance of warrants in stock offering | 1,386 |  |  | 1,386 |
Comprehensive loss | (15,341) |  |  |  | (15,341)
BALANCE at Dec. 31, 2016 | $ 3,059 |  | $ 12 | 229,275 | (226,228)
BALANCE, Shares at Dec. 31, 2016 | 12,297,954 |  | 12,298,000 |  |
Non-cash compensation recognized on stock options and ESPP | $ 44 |  |  | 44 |
Restricted stock grants, net of cancellations | 1,127 |  |  | 1,127 |
Restricted stock grants, net of cancellations, shares |  |  | (69,000) |  |
Cancellation of shares for payment of withholding tax | (171) |  |  | (171) |
Cancellation of shares for payment of withholding tax, shares |  |  | (126,000) |  |
Employee stock purchase plan | 3 |  |  | 3 |
Employee stock purchase plan, shares |  |  | 4,000 |  |
Preferred shares issued in stock offering,net of offering costs | 5,213 |  |  | 5,213 |
Preferred shares issued in stock offering, net of offering costs, shares |  | 3,000 |  |  |
Common shares issued in stock offering,net of offering costs | 1,992 |  | $ 2 | 1,990 |
Common shares issued in stock offering, net offering costs, shares |  |  | 2,162,000 |  |
Issuance of warrants in stock offering | 64 |  |  | 64 |
Preferred shares issued with debtconversion | (103) |  |  | (103) |
Preferred shares issued with debt conversion, shares |  | 3,000 |  |  |
Warrant repricing |  |  |  | 44 | (44)
Comprehensive loss | (6,661) |  |  |  | (6,661)
BALANCE at Dec. 31, 2017 | $ 4,567 |  | $ 14 | $ 237,486 | $ (232,933)
BALANCE, Shares at Dec. 31, 2017 | 5,500 | 6,000 |  |  |
BALANCE, Shares at Dec. 31, 2017 | 14,268,765 |  | 14,269,000 |  |

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