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Shared-Based Compensation (Options Activity and Position) (Details)
9 Months Ended
Sep. 30, 2016
USD ($)
$ / shares
shares
Shared-based Compensation Options Activity And Position Details  
Outstanding shares | shares 4,087,000
Weighted-average exercise price of options outstanding | $ / shares $ 3.92
Weighted-average remaining contractual term (in years) of options outstanding 7 years 216 days
Aggregate intrinsic value of options outstanding | $ $ 5,000
Exercisable shares | shares 2,040,000
Weighted-average exercise price of options exercisable | $ / shares $ 5.60
Weighted-average remaining contractual term (in years) of options exercisable 6 years 36 days
Aggregate intrinsic value of options exercisable | $ $ 4,000