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UNAUDITED CONDENSED CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($) $ in Thousands | Total | Common Stock | Additional Paid-in- Capital | Accumulated Deficit
--- | --- | --- | --- | ---
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |
Adoption of new accounting standard - ASC 606 | $ 1,034 |  |  | $ 1,034
Beginning balance (in shares) at Dec. 31, 2017 |  | 39,300,823 |  |
Beginning balance at Dec. 31, 2017 | 19,975 | $ 4 | $ 53,586 | (33,615)
Beginning balance, adjusted at Dec. 31, 2017 | $ 21,009 | $ 4 | 53,586 | (32,581)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |
Exercise of options (in shares) | 8,532 | 8,532 |  |
Exercise of options | $ 7 |  | 7 |
Equity-based compensation | 365 |  | 365 |
Issuance of common stock, net (in shares) |  | 145,466 |  |
Issuance of common stock, net | 436 |  | 436 |
Net loss | (5,509) |  |  | (5,509)
Ending balance (in shares) at Mar. 31, 2018 |  | 39,454,821 |  |
Ending balance at Mar. 31, 2018 | $ 16,308 | $ 4 | $ 54,394 | $ (38,090)

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