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CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY - USD ($) $ in Thousands | Common Stock [Member] | Preferred Stock [Member] | Additional Paid-in Capital [Member] | Accumulated Deficit [Meber] | Accumulated Other Comprehensive Loss [Member] | Total
--- | --- | --- | --- | --- | --- | ---
Balances at beginning at Dec. 31, 2013 | $ 46 |  | $ 123,741 | $ (14,718) | $ (12) | $ 109,057
Balances at beginning (in shares) at Dec. 31, 2013 | 4,622,646 |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Stock-based compensation |  |  | 318 |  |  | 318
Unrealized loss on marketable equity securities |  |  |  |  | (44) | (44)
Exercise of employee stock options |  |  | (62) |  |  | (62)
Exercise of employee stock options (in shares) | 26,325 |  |  |  |  |
Exercise of stock purchase warrants |  |  | 8 |  |  | 8
Exercise of stock purchase warrants (in shares) | 2,019 |  |  |  |  |
Issuance of common stock to fund ESOP contribution | $ 1 |  | 208 |  |  | 209
Issuance of common stock to fund ESOP contribution (in shares) | 23,620 |  |  |  |  |
Net loss |  |  |  | (2,091) |  | (2,091)
Balances at end at Dec. 31, 2014 | $ 47 |  | 124,213 | (16,809) | (56) | 107,395
Balances at end (in shares) at Dec. 31, 2014 | 4,674,610 |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Issuance of common stock |  |  | 332 |  |  | 332
Issuance of common stock (in shares) | 25,346 |  |  |  |  |
Stock-based compensation |  |  | 588 |  |  | 588
Realized loss on marketable equity securities |  |  |  |  | 56 | 56
Net loss |  |  |  | (92,896) |  | (92,896)
Balances at end at Dec. 31, 2015 | $ 47 |  | 125,133 | (109,705) |  | 15,475
Balances at end (in shares) at Dec. 31, 2015 | 4,699,956 |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Issuance of common stock | $ 3 |  | (3) |  |  |
Issuance of common stock (in shares) | 367,667 |  |  |  |  |
Cash payment for fractional shares |  |  | (3) |  |  | (3)
Cash payment for fractional shares (in shares) | (1,245) |  |  |  |  |
Stock-based compensation |  |  | 213 |  |  | 213
Issuance of common shares on 7/7/16 to settle ESOP | $ 1 |  | 169 |  |  | 170
Issuance of common shares on 7/7/16 to settle ESOP (in shares) | 68,128 |  |  |  |  |
Issuance of common shares | $ 10 |  | 68 |  |  | 78
Issuance of common shares (in shares) | 1,000,000 |  |  |  |  |
Issuance of Series A Convertible Preferred Stock |  | $ 1 | 1,999 |  |  | 2,000
Issuance of Series A Convertible Preferred Stock (in shares) |  | 50,000 |  |  |  |
Unrealized loss on marketable equity securities |  |  |  |  | (54) | (54)
Net loss |  |  |  | (14,120) |  | (14,120)
Balances at end at Dec. 31, 2016 | $ 62 | $ 1 | $ 127,576 | $ (123,825) | $ (55) | $ 3,758
Balances at end (in shares) at Dec. 31, 2016 | 6,184,506 | 50,000 |  |  |  |

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