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Capital Stock (Tables)
9 Months Ended
Sep. 30, 2017
Capital Stock Disclosure [Abstract]  
Schedule Of Stock Options And Restricted Stock Units Activity Rollforward [Table Text Block]
Stock OptionsRestricted Stock UnitsMarket Condition RSU's
Weighted
StockAverageRestrictedMarket
OptionsExercise Stock UnitsGrant DateCondition RSU'sGrant Date
Outstanding PriceOutstandingFair ValueOutstandingFair Value
Balance at December 31, 20164,096,818$3.941,072,653$3.15182,150$4.81
Granted62,5002.991,293,7712.48--
Exercised(75,913)2.49----
Vested (RSUs)--(457,395)3.09--
Cancelled / forfeited(303,013)3.93(70,486)3.08(11,247)4.81
Balance at September 30, 20173,780,392$3.951,838,543$2.70170,903$4.81
Table Of Assumptions [Table Text Block]
Three Months EndedNine Months Ended
September 30,September 30,
2017201620172016
Volatility41.99%43.05%41.30%41.97%
Risk-free interest rate1.74%1.01%1.88%1.29%
Expected holding period (in years)5.10years5.08years5.16years5.21years
Dividend yield-%-%-%-%
Stock Based Compensation Expense Activity By Function [Table Text Block]
Three Months EndedNine Months Ended
September 30,September 30,
2017201620172016
(in thousands)
Cost of revenues$16$17$46$44
Sales and marketing172159461401
General and administrative7097361,9952,071
Research and development363110280
Total stock-based compensation$933$943$2,604$2,596
Basic and Diluted Shares [Table Text Block]
Three Months EndedNine Months Ended
September 30,September 30,
2017201620172016
Basic 34,840,32434,327,45934,705,94734,156,606
Effect of assumed conversion of employee and director stock options, restricted stock units and Market Condition RSU's----
Diluted34,840,32434,327,45934,705,94734,156,606