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Equity - Summary of Stock Option Plans (Details)
$ / shares in Units, $ in Thousands
 9 Months Ended
Sep. 30, 2016
USD ($)
$ / shares
shares
Equity  
Number of options, outstanding at beginning balance | shares 2,364,918
Number of options, granted | shares 65,000
Number of options, exercised | shares
Number of options, forfeited or expired | shares (145,503)
Number of options, outstanding at end balance | shares 2,284,415
Number of options, exercisable at end of period | shares 2,165,663
Weighted average exercise price, outstanding at beginning balance | $ / shares $ 3.51
Weighted average exercise price, granted | $ / shares 0.15
Weighted average exercise price, exercised | $ / shares
Weighted average exercise price, forfeited or expired | $ / shares 4.18
Weighted average exercise price, outstanding at end balance | $ / shares 3.37
Weighted average exercise price, exercisable at end of period | $ / shares $ 3.49
Weighted average remaining contractual terms, outstanding 4 years 7 months 6 days
Weighted average remaining contractual terms, exercisable 4 years 7 months 6 days
Aggregate intrinsic value, outstanding | $ $ 3
Aggregate intrinsic value, exercisable | $ $ 2