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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, 2014 $ 438,083 $ (412,811) $ 11 $ 25,283
Balances, beginning of period (in shares) at Dec. 31, 2014 82,390,217      
Shares issued (RSUs vested/option exercises) (in shares) 493,345      
Stock-based compensation $ 817     817
Other comprehensive income/(loss)     (46) (46)
Net income   1,011   1,011
Balances, end of period at Dec. 31, 2015 $ 438,900 (411,800) (35) 27,065
Balances, end of period (in shares) at Dec. 31, 2015 82,883,562      
Shares issued (net of offering costs of $1,425) $ 15,883     15,883
Shares issued (net of offering costs of $1,425) (in shares) 12,362,500      
Shares issued (RSUs vested/option exercises) $ 15     15
Shares issued (RSUs vested/option exercises) (in shares) 2,540,546      
Stock-based compensation $ 476     476
Other comprehensive income/(loss)     71 71
Net income   (1,160)   (1,160)
Balances, end of period at Sep. 30, 2016 $ 455,274 $ (412,960) $ 36 $ 42,350
Balances, end of period (in shares) at Sep. 30, 2016 97,786,608