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CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY - USD ($)
$ in Thousands
Common Stock [Member]
Additional Paid-In Capital [Member]
Accumulated Deficit [Member]
Accumulated Other Comprehensive Loss [Member]
Total
Balances at beginning at Dec. 31, 2012 $ 277 $ 123,078 $ (7,339) $ 101 $ 116,117
Balances at beginning (in shares) at Dec. 31, 2012 27,652,602        
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Stock-based compensation 184 184
Issuance of common stock to fund ESOP contribution $ 200 200
Issuance of common stock to fund ESOP contribution (in shares) 53,276        
Unrealized loss on marketable equity securities $ (113) (113)
Issuance of common stock for services $ 48 48
Issuance of common stock for services (in shares) 30,000        
Net loss $ (7,379) (7,379)
Balances at end at Dec. 31, 2013 $ 277 $ 123,510 $ (14,718) $ (12) 109,057
Balances at end (in shares) at Dec. 31, 2013 27,735,878        
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Stock-based compensation 318 318
Exercise of employee stock options $ 2 (64) (62)
Exercise of employee stock options (in shares) 157,950        
Exercise of stock purchase warrants 8 8
Exercise of stock purchase warrants (in shares) 12,112        
Issuance of common stock to fund ESOP contribution $ 1 $ 208 209
Issuance of common stock to fund ESOP contribution (in shares) 141,721        
Unrealized loss on marketable equity securities $ (44) (44)
Net loss $ (2,091) (2,091)
Balances at end at Dec. 31, 2014 $ 280 $ 123,980 $ (16,809) $ (56) 107,395
Balances at end (in shares) at Dec. 31, 2014 28,047,661        
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Issuance of common stock upon vesting of restricted common stock, net $ 2 330 332
Issuance of common stock upon vesting of restricted common stock, net (in shares) 152,074        
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 $ 282 $ 124,898 $ (109,705) $ 15,475
Balances at end (in shares) at Dec. 31, 2015 28,199,735