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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