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CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($)
$ in Thousands
Common Stock [Member]
Accumulated Deficit [Member]
Accumulated Other Comprehensive Income/(Loss) [Member]
Total
Balances, beginning of period at Dec. 31, 2015 $ 438,900 $ (411,800) $ (35) $ 27,065
Balances, beginning of period (in shares) at Dec. 31, 2015 82,883,562      
Units issued (net of offering costs of $1,425) $ 15,883     15,883
Units issued (net of offering costs of $1,425) (in shares) 12,362,500      
Shares issued (RSUs vested/options exercised) $ 15     15
Shares issued (RSUs vested/options exercised) (in shares) 2,540,546      
Stock-based compensation $ 645     645
Other comprehensive income/(loss)     50 50
Net loss   (3,133)   (3,133)
Balances, end of period at Dec. 31, 2016 $ 455,443 (414,933) 15 40,525
Balances, end of period (in shares) at Dec. 31, 2016 97,786,608      
Shares issued (RSUs vested/options exercised) (in shares) 409,700      
Stock-based compensation $ 427     427
Other comprehensive income/(loss)     (21) (21)
Net loss   (5,529)   (5,529)
Balances, end of period at Jun. 30, 2017 $ 455,870 $ (420,462) $ (6) $ 35,402
Balances, end of period (in shares) at Jun. 30, 2017 98,196,308