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CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ DEFICIT - USD ($) $ in Thousands | Total | Common Stock | Additional Paid-in Capital | Treasury Stock | AccumulatedDeficit | Non-Controlling Interest
--- | --- | --- | --- | --- | --- | ---
Balance at Dec. 31, 2015 | $ (4,071) | $ 31 | $ 5,832 | $ 0 | $ (9,845) | $ (89)
Balance, shares at Dec. 31, 2015 |  | 31,271,234 |  |  |  |
Stock-based compensation expense | 185 | $ 0 | 185 | 0 | 0 | 0
Service provider warrant expense | 15 | 0 | 15 | 0 | 0 | 0
Net income | 69 | 0 | 0 | 0 | 69 |
Balance at Dec. 31, 2016 | (3,802) | $ 31 | 6,032 | 0 | (9,776) | (89)
Balance, shares at Dec. 31, 2016 |  | 31,271,234 |  |  |  |
Stock option exercises | 39 | $ 0 | 39 | 0 | 0 | 0
Stock option exercises, shares |  | 41,143 |  |  |  |
Common stock issued pursuant to the Private Placement | 1,249 | $ 2 | 1,247 | 0 | 0 | 0
Common stock issued pursuant to the Private Placement, shares |  | 1,552,500 |  |  |  |
Stock-based compensation expense | 66 | $ 0 | 66 | 0 | 0 | 0
Service provider warrant expense | 228 | 0 | 228 | 0 | 0 | 0
Treasury stock | $ (243) | $ 0 | 0 | (243) | 0 | 0
Treasury stock, shares | (86,837) | (86,837) |  |  |  |
Net income | $ 7,365 | $ 0 | 0 | 0 | 7,365 |
Balance at Dec. 31, 2017 | $ 4,902 | $ 33 | $ 7,612 | $ (243) | $ (2,411) | $ (89)
Balance, shares at Dec. 31, 2017 |  | 32,778,040 |  |  |  |

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