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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, 2013 $ 436,957 $ (393,885) $ (59) $ 43,013
Balances, beginning of period (in shares) at Dec. 31, 2013 82,275,217      
Shares issued (RSUs vested/options exercised) (in shares) 115,000     115,000
Stock-based compensation $ 1,126     $ 1,126
Other comprehensive income/(loss)     70 70
Net income/(loss)   (18,926)   (18,926)
Balances, end of period at Dec. 31, 2014 $ 438,083 (412,811) 11 $ 25,283
Balances, end of period (in shares) at Dec. 31, 2014 82,390,217      
Shares issued (RSUs vested/options exercised) (in shares) 493,345     493,345
Stock-based compensation $ 817     $ 817
Other comprehensive income/(loss)     (46) (46)
Net income/(loss)   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      
Units issued (net of offering costs of $1,425)(Note 6) $ 15,883     15,883
Units issued (net of offering costs of $1,425)(Note 6) (in shares) 12,362,500      
Shares issued (RSUs vested/options exercised) $ 15     $ 15
Shares issued (RSUs vested/options exercised) (in shares) 2,540,546     2,540,546
Stock-based compensation $ 645     $ 645
Other comprehensive income/(loss)     50 50
Net income/(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