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Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands | Total | Common Stock [Member] | Additional Paid-in Capital [Member] | Accumulated Comprehensive Deficit [Member]
--- | --- | --- | --- | ---
BALANCE at Dec. 31, 2013 | $ 18,171 | $ 37 | $ 214,619 | $ (196,485)
BALANCE, Shares at Dec. 31, 2013 |  | 36,994,000 |  |
Exercise of common stock options | $ 6 |  | 6 |
Exercise of common stock options, shares | 1,000 | 4,000 |  |
Non-cash compensation recognized on stock options and ESPP | $ 157 |  | 157 |
Restricted stock grants, net of cancellations | 3,495 | $ 1 | 3,494 |
Restricted stock grants, net of cancellations, shares |  | 1,421,000 |  |
Cancellation of shares for payment of withholding tax | (391) |  | (391) |
Cancellation of shares for payment of withholding tax, shares |  | (292,000) |  |
Employee stock purchase plan | 21 |  | 21 |
Employee stock purchase plan, shares |  | 27,000 |  |
Issuance of common stock in a private placement | 5,242 | $ 7 | 5,235 |
Issuance of common stock in a private placement, shares |  | 6,846,000 |  |
Comprehensive loss | (11,799) |  |  | (11,799)
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 | 11,432,318 | 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 | 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 |  |

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