|
Shareholders' equity and capital stock (Details 3) (CAD)
|
12 Months Ended |
|
|
|
|
Dec. 31, 2012
|
Dec. 31, 2011
|
Dec. 31, 2010
|
Dec. 31, 2009
|
| Exercise price |
1.32
|
1.79
|
1.79
|
1.65
|
| Number of options, Outstanding |
8,511,722
|
6,413,902
|
5,665,568
|
8,361,452
|
| Weighted- average remaining contractual life (years), Outstanding |
3 years 2 months 12 days
|
|
|
|
| Aggregate Intrinsic Value, Outstanding |
63,553
|
|
|
|
| Number of options, Exercisable |
5,994,972
|
|
|
|
| Weighted- average remaining contractual life (years), Exercisable |
2 years 7 months 6 days
|
|
|
|
| Aggregate Intrinsic Value, Exercisable |
74,883
|
|
|
|
|
Stock Option Exercise Price Range One [Member]
|
|
|
|
|
| Exercise price |
1.65
|
|
|
|
| Number of options, Outstanding |
680,000
|
|
|
|
| Weighted- average remaining contractual life (years), Outstanding |
4 months 24 days
|
|
|
|
| Aggregate Intrinsic Value, Outstanding |
0
|
|
|
|
| Number of options, Exercisable |
680,000
|
|
|
|
| Weighted- average remaining contractual life (years), Exercisable |
4 months 24 days
|
|
|
|
| Aggregate Intrinsic Value, Exercisable |
0
|
|
|
|
| Expiry |
May
08,
2013
|
|
|
|
|
Stock Option Exercise Price Range Two [Member]
|
|
|
|
|
| Exercise price |
1.72
|
|
|
|
| Number of options, Outstanding |
25,000
|
|
|
|
| Weighted- average remaining contractual life (years), Outstanding |
7 months 6 days
|
|
|
|
| Aggregate Intrinsic Value, Outstanding |
0
|
|
|
|
| Number of options, Exercisable |
25,000
|
|
|
|
| Weighted- average remaining contractual life (years), Exercisable |
7 months 6 days
|
|
|
|
| Aggregate Intrinsic Value, Exercisable |
0
|
|
|
|
| Expiry |
Aug.
06,
2013
|
|
|
|
|
Stock Option Exercise Price Range Three [Member]
|
|
|
|
|
| Exercise price |
0.71
|
|
|
|
| Number of options, Outstanding |
437,268
|
|
|
|
| Weighted- average remaining contractual life (years), Outstanding |
1 year 1 month 6 days
|
|
|
|
| Aggregate Intrinsic Value, Outstanding |
52,472
|
|
|
|
| Number of options, Exercisable |
437,268
|
|
|
|
| Weighted- average remaining contractual life (years), Exercisable |
1 year 1 month 6 days
|
|
|
|
| Aggregate Intrinsic Value, Exercisable |
52,472
|
|
|
|
| Expiry |
Feb.
09,
2014
|
|
|
|
|
Stock Option Exercise Price Range Four [Member]
|
|
|
|
|
| Exercise price |
0.9
|
|
|
|
| Number of options, Outstanding |
813,028
|
|
|
|
| Weighted- average remaining contractual life (years), Outstanding |
1 year 8 months 12 days
|
|
|
|
| Aggregate Intrinsic Value, Outstanding |
0
|
|
|
|
| Number of options, Exercisable |
813,028
|
|
|
|
| Weighted- average remaining contractual life (years), Exercisable |
1 year 8 months 12 days
|
|
|
|
| Aggregate Intrinsic Value, Exercisable |
0
|
|
|
|
| Expiry |
Sep.
02,
2014
|
|
|
|
|
Stock Option Exercise Price Range Five [Member]
|
|
|
|
|
| Exercise price |
0.81
|
|
|
|
| Number of options, Outstanding |
554,074
|
|
|
|
| Weighted- average remaining contractual life (years), Outstanding |
2 years 2 months 12 days
|
|
|
|
| Aggregate Intrinsic Value, Outstanding |
11,081
|
|
|
|
| Number of options, Exercisable |
554,074
|
|
|
|
| Weighted- average remaining contractual life (years), Exercisable |
2 years 2 months 12 days
|
|
|
|
| Aggregate Intrinsic Value, Exercisable |
11,081
|
|
|
|
| Expiry |
Mar.
05,
2015
|
|
|
|
|
Stock Option Exercise Price Range Six [Member]
|
|
|
|
|
| Exercise price |
2.87
|
|
|
|
| Number of options, Outstanding |
1,318,293
|
|
|
|
| Weighted- average remaining contractual life (years), Outstanding |
3 years 1 month 6 days
|
|
|
|
| Aggregate Intrinsic Value, Outstanding |
0
|
|
|
|
| Number of options, Exercisable |
1,318,293
|
|
|
|
| Weighted- average remaining contractual life (years), Exercisable |
3 years 1 month 6 days
|
|
|
|
| Aggregate Intrinsic Value, Exercisable |
0
|
|
|
|
| Expiry |
Jan. 28,
2016
|
|
|
|
|
Stock Option Exercise Price Range Seven [Member]
|
|
|
|
|
| Exercise price |
1.57
|
|
|
|
| Number of options, Outstanding |
645,000
|
|
|
|
| Weighted- average remaining contractual life (years), Outstanding |
3 years 6 months
|
|
|
|
| Aggregate Intrinsic Value, Outstanding |
0
|
|
|
|
| Number of options, Exercisable |
490,200
|
|
|
|
| Weighted- average remaining contractual life (years), Exercisable |
3 years 6 months
|
|
|
|
| Aggregate Intrinsic Value, Exercisable |
0
|
|
|
|
| Expiry |
Jul.
07,
2016
|
|
|
|
|
Stock Option Exercise Price Range Eight [Member]
|
|
|
|
|
| Exercise price |
1.17
|
|
|
|
| Number of options, Outstanding |
784,109
|
|
|
|
| Weighted- average remaining contractual life (years), Outstanding |
3 years 8 months 12 days
|
|
|
|
| Aggregate Intrinsic Value, Outstanding |
0
|
|
|
|
| Number of options, Exercisable |
595,923
|
|
|
|
| Weighted- average remaining contractual life (years), Exercisable |
3 years 8 months 12 days
|
|
|
|
| Aggregate Intrinsic Value, Exercisable |
0
|
|
|
|
| Expiry |
Sep.
09,
2016
|
|
|
|
|
Stock Option Exercise Price Range Nine [Member]
|
|
|
|
|
| Exercise price |
1.16
|
|
|
|
| Number of options, Outstanding |
200,000
|
|
|
|
| Weighted- average remaining contractual life (years), Outstanding |
3 years 9 months 18 days
|
|
|
|
| Aggregate Intrinsic Value, Outstanding |
0
|
|
|
|
| Number of options, Exercisable |
152,000
|
|
|
|
| Weighted- average remaining contractual life (years), Exercisable |
3 years 9 months 18 days
|
|
|
|
| Aggregate Intrinsic Value, Exercisable |
0
|
|
|
|
| Expiry |
Oct. 24,
2016
|
|
|
|
|
Stock Option Exercise Price Range Ten [Member]
|
|
|
|
|
| Exercise price |
0.91
|
|
|
|
| Number of options, Outstanding |
1,136,368
|
|
|
|
| Weighted- average remaining contractual life (years), Outstanding |
4 years
|
|
|
|
| Aggregate Intrinsic Value, Outstanding |
0
|
|
|
|
| Number of options, Exercisable |
605,324
|
|
|
|
| Weighted- average remaining contractual life (years), Exercisable |
4 years
|
|
|
|
| Aggregate Intrinsic Value, Exercisable |
0
|
|
|
|
| Expiry |
Jan. 12,
2017
|
|
|
|
|
Stock Option Exercise Price Range Eleven [Member]
|
|
|
|
|
| Exercise price |
1.39
|
|
|
|
| Number of options, Outstanding |
200,000
|
|
|
|
| Weighted- average remaining contractual life (years), Outstanding |
4 years 1 month 6 days
|
|
|
|
| Aggregate Intrinsic Value, Outstanding |
0
|
|
|
|
| Number of options, Exercisable |
108,000
|
|
|
|
| Weighted- average remaining contractual life (years), Exercisable |
4 years 1 month 6 days
|
|
|
|
| Aggregate Intrinsic Value, Exercisable |
0
|
|
|
|
| Expiry |
Feb.
01,
2017
|
|
|
|
|
Stock Option Exercise Price Range Twelve [Member]
|
|
|
|
|
| Exercise price |
1.18
|
|
|
|
| Number of options, Outstanding |
100,000
|
|
|
|
| Weighted- average remaining contractual life (years), Outstanding |
4 years 2 months 12 days
|
|
|
|
| Aggregate Intrinsic Value, Outstanding |
0
|
|
|
|
| Number of options, Exercisable |
54,000
|
|
|
|
| Weighted- average remaining contractual life (years), Exercisable |
4 years 2 months 12 days
|
|
|
|
| Aggregate Intrinsic Value, Exercisable |
0
|
|
|
|
| Expiry |
Mar.
01,
2017
|
|
|
|
|
Stock Option Exercise Price Range Thirteen [Member]
|
|
|
|
|
| Exercise price |
0.76
|
|
|
|
| Number of options, Outstanding |
1,618,582
|
|
|
|
| Weighted- average remaining contractual life (years), Outstanding |
4 years 10 months 24 days
|
|
|
|
| Aggregate Intrinsic Value, Outstanding |
0
|
|
|
|
| Number of options, Exercisable |
161,862
|
|
|
|
| Weighted- average remaining contractual life (years), Exercisable |
4 years 10 months 24 days
|
|
|
|
| Aggregate Intrinsic Value, Exercisable |
11,330
|
|
|
|
| Expiry |
Dec.
07,
2017
|
|
|
|