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SHAREHOLDERS' DEFICIT - USD ($) $ in Thousands | Common stock | Additional Paid-In Capital | Treasury Stock, at cost | Accumulated Deficit | Total
--- | --- | --- | --- | --- | ---
Balance at beginning of year at Dec. 31, 2012 | $ 2 | $ 11 | $ (3) | $ (61,414) | $ (61,404)
Balance at beginning of year (in shares) at Dec. 31, 2012 | 1,924,845 |  |  |  |
Increase (decrease) in stockholders' equity (deficit) |  |  |  |  |
Accruals of dividends and accretion to redemption value |  | (1) |  | (2,925) | (2,926)
Performance Adjustment of Series A | $ (1) | 12,240 |  |  | 12,239
Performance Adjustment of Series A (in shares) | (962,962) |  |  |  |
Stock-based compensation expense |  | 62 |  |  | 62
Exercise of common stock options |  | 1 |  |  | 1
Exercise of common stock options (in shares) | 1,077 |  |  |  |
Net loss |  |  |  | (16,197) | (16,197)
Balance at end of year at Dec. 31, 2013 | $ 1 | 12,313 | (3) | (80,536) | (68,225)
Balance at end of year (in shares) at Dec. 31, 2013 | 962,960 |  |  |  |
Increase (decrease) in stockholders' equity (deficit) |  |  |  |  |
Accruals of dividends and accretion to redemption value |  |  |  | (3,300) | (3,300)
Issuance of restricted stock awards to employees (in shares) | 10,869 |  |  |  |
Stock-based compensation expense |  | 22 |  |  | 22
Exercise of common stock options |  | 72 |  |  | 72
Exercise of common stock options (in shares) | 32,390 |  |  |  |
Net loss |  |  |  | (17,917) | (14,448)
Balance at end of year at Dec. 31, 2014 | $ 1 | $ 12,407 | $ (3) | $ (101,753) | $ (89,348)
Balance at end of year (in shares) at Dec. 31, 2014 | 1,006,219 |  |  |  |
Increase (decrease) in stockholders' equity (deficit) |  |  |  |  |
Exercise of common stock options (in shares) |  |  |  |  | 121,729
Net loss |  |  |  |  | $ (17,730)
Balance at end of year at Sep. 30, 2015 |  |  |  |  | $ 93,561

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