Shareholders' Equity and Capital Stock (Details 1) (USD $) | 3 Months Ended | |
In Thousands, except Share data, unless otherwise specified | Mar. 31, 2014 | Dec. 31, 2013 |
Exercise price | $1.19 | $1.15 |
Number of options, Outstanding | 8,315,737 | 9,273,659 |
Weighted- average remaining contractual life (years), Outstanding | '2 years 10 months 24 days | ' |
Aggregate Intrinsic Value, Outstanding | $4,395 | ' |
Number of options, Exercisable | 6,548,801 | ' |
Weighted- average remaining contractual life (years), Exercisable | '2 years 4 months 24 days | ' |
Aggregate Intrinsic Value, Exercisable | 3,349 | ' |
Stock Option Exercise Price Range One [Member] | ' | ' |
Exercise price | $0.81 | ' |
Number of options, Outstanding | 512,662 | ' |
Weighted- average remaining contractual life (years), Outstanding | '4 months 24 days | ' |
Aggregate Intrinsic Value, Outstanding | 379 | ' |
Number of options, Exercisable | 512,662 | ' |
Weighted- average remaining contractual life (years), Exercisable | '4 months 24 days | ' |
Aggregate Intrinsic Value, Exercisable | 379 | ' |
Expiry | 2-Sep-14 | ' |
Stock Option Exercise Price Range Two [Member] | ' | ' |
Exercise price | $0.73 | ' |
Number of options, Outstanding | 468,389 | ' |
Weighted- average remaining contractual life (years), Outstanding | '10 months 24 days | ' |
Aggregate Intrinsic Value, Outstanding | 384 | ' |
Number of options, Exercisable | 468,389 | ' |
Weighted- average remaining contractual life (years), Exercisable | '10 months 24 days | ' |
Aggregate Intrinsic Value, Exercisable | 384 | ' |
Expiry | 5-Mar-15 | ' |
Stock Option Exercise Price Range Three [Member] | ' | ' |
Exercise price | $2.59 | ' |
Number of options, Outstanding | 1,318,293 | ' |
Weighted- average remaining contractual life (years), Outstanding | '1 year 9 months 18 days | ' |
Aggregate Intrinsic Value, Outstanding | 0 | ' |
Number of options, Exercisable | 1,318,293 | ' |
Weighted- average remaining contractual life (years), Exercisable | '1 year 9 months 18 days | ' |
Aggregate Intrinsic Value, Exercisable | 0 | ' |
Expiry | 28-Jan-16 | ' |
Stock Option Exercise Price Range Four [Member] | ' | ' |
Exercise price | $1.42 | ' |
Number of options, Outstanding | 545,000 | ' |
Weighted- average remaining contractual life (years), Outstanding | '2 years 3 months 18 days | ' |
Aggregate Intrinsic Value, Outstanding | 71 | ' |
Number of options, Exercisable | 545,000 | ' |
Weighted- average remaining contractual life (years), Exercisable | '2 years 3 months 18 days | ' |
Aggregate Intrinsic Value, Exercisable | 71 | ' |
Expiry | 7-Jul-16 | ' |
Stock Option Exercise Price Range Five [Member] | ' | ' |
Exercise price | $1.06 | ' |
Number of options, Outstanding | 677,223 | ' |
Weighted- average remaining contractual life (years), Outstanding | '2 years 4 months 24 days | ' |
Aggregate Intrinsic Value, Outstanding | 332 | ' |
Number of options, Exercisable | 677,223 | ' |
Weighted- average remaining contractual life (years), Exercisable | '2 years 4 months 24 days | ' |
Aggregate Intrinsic Value, Exercisable | 332 | ' |
Expiry | 9-Sep-16 | ' |
Stock Option Exercise Price Range Six [Member] | ' | ' |
Exercise price | $1.05 | ' |
Number of options, Outstanding | 200,000 | ' |
Weighted- average remaining contractual life (years), Outstanding | '2 years 7 months 6 days | ' |
Aggregate Intrinsic Value, Outstanding | 100 | ' |
Number of options, Exercisable | 200,000 | ' |
Weighted- average remaining contractual life (years), Exercisable | '2 years 7 months 6 days | ' |
Aggregate Intrinsic Value, Exercisable | 100 | ' |
Expiry | 24-Oct-16 | ' |
Stock Option Exercise Price Range Seven [Member] | ' | ' |
Exercise price | $0.82 | ' |
Number of options, Outstanding | 1,002,482 | ' |
Weighted- average remaining contractual life (years), Outstanding | '2 years 9 months 18 days | ' |
Aggregate Intrinsic Value, Outstanding | 732 | ' |
Number of options, Exercisable | 1,002,482 | ' |
Weighted- average remaining contractual life (years), Exercisable | '2 years 9 months 18 days | ' |
Aggregate Intrinsic Value, Exercisable | 732 | ' |
Expiry | 12-Jan-17 | ' |
Stock Option Exercise Price Range Eight [Member] | ' | ' |
Exercise price | $1.26 | ' |
Number of options, Outstanding | 200,000 | ' |
Weighted- average remaining contractual life (years), Outstanding | '2 years 9 months 18 days | ' |
Aggregate Intrinsic Value, Outstanding | 58 | ' |
Number of options, Exercisable | 200,000 | ' |
Weighted- average remaining contractual life (years), Exercisable | '2 years 9 months 18 days | ' |
Aggregate Intrinsic Value, Exercisable | 58 | ' |
Expiry | 1-Feb-17 | ' |
Stock Option Exercise Price Range Nine [Member] | ' | ' |
Exercise price | $1.07 | ' |
Number of options, Outstanding | 100,000 | ' |
Weighted- average remaining contractual life (years), Outstanding | '2 years 10 months 24 days | ' |
Aggregate Intrinsic Value, Outstanding | 48 | ' |
Number of options, Exercisable | 100,000 | ' |
Weighted- average remaining contractual life (years), Exercisable | '2 years 10 months 24 days | ' |
Aggregate Intrinsic Value, Exercisable | 48 | ' |
Expiry | 1-Mar-17 | ' |
Stock Option Exercise Price Range Ten [Member] | ' | ' |
Exercise price | $0.69 | ' |
Number of options, Outstanding | 1,408,150 | ' |
Weighted- average remaining contractual life (years), Outstanding | '3 years 8 months 12 days | ' |
Aggregate Intrinsic Value, Outstanding | 1,211 | ' |
Number of options, Exercisable | 1,041,080 | ' |
Weighted- average remaining contractual life (years), Exercisable | '3 years 8 months 12 days | ' |
Aggregate Intrinsic Value, Exercisable | 895 | ' |
Expiry | 7-Dec-17 | ' |
Stock Option Exercise Price Range Eleven [Member] | ' | ' |
Exercise price | $0.70 | ' |
Number of options, Outstanding | 637,382 | ' |
Weighted- average remaining contractual life (years), Outstanding | '4 years 1 month 6 days | ' |
Aggregate Intrinsic Value, Outstanding | 542 | ' |
Number of options, Exercisable | 338,866 | ' |
Weighted- average remaining contractual life (years), Exercisable | '4 years 1 month 6 days | ' |
Aggregate Intrinsic Value, Exercisable | 288 | ' |
Expiry | 25-Apr-18 | ' |
Stock Option Exercise Price Range Twelve [Member] | ' | ' |
Exercise price | $1.12 | ' |
Number of options, Outstanding | 100,000 | ' |
Weighted- average remaining contractual life (years), Outstanding | '4 years 3 months 18 days | ' |
Aggregate Intrinsic Value, Outstanding | 43 | ' |
Number of options, Exercisable | 32,000 | ' |
Weighted- average remaining contractual life (years), Exercisable | '4 years 3 months 18 days | ' |
Aggregate Intrinsic Value, Exercisable | 14 | ' |
Expiry | 1-Aug-18 | ' |
Stock Option Exercise Price Range Thirteen [Member] | ' | ' |
Exercise price | $1.08 | ' |
Number of options, Outstanding | 1,046,156 | ' |
Weighted- average remaining contractual life (years), Outstanding | '4 years 8 months 12 days | ' |
Aggregate Intrinsic Value, Outstanding | 492 | ' |
Number of options, Exercisable | 102,806 | ' |
Weighted- average remaining contractual life (years), Exercisable | '4 years 8 months 12 days | ' |
Aggregate Intrinsic Value, Exercisable | 48 | ' |
Expiry | 27-Dec-18 | ' |
Stock Option Exercise Price Range Fourteen Member [Member] | ' | ' |
Exercise price | $1.52 | ' |
Number of options, Outstanding | 100,000 | ' |
Weighted- average remaining contractual life (years), Outstanding | '5 years | ' |
Aggregate Intrinsic Value, Outstanding | 3 | ' |
Number of options, Exercisable | 10,000 | ' |
Weighted- average remaining contractual life (years), Exercisable | '5 years | ' |
Aggregate Intrinsic Value, Exercisable | $0 | ' |
Expiry | 31-Mar-19 | ' |