|
Common shares
purchasable upon
exercise of
warrants
|
Weighted average
exercise price (C$)
|
Weighted
average exercise
price (US$)
|
Range of
exercise prices
(C$)
|
Range of
exercise prices
(US$)
|
Weighted
average
remaining
contractual life
(years)
|
Aggregate
intrinsic value
(C$)
|
Aggregate
intrinsic value
(US$)
|
|||||||||||||||||||||||||||
|
Balance, December 31, 2011
|
949,495 | $ | 3.25 | $ | 3.20 | $1.65 | - | $3.35 | $1.62 | - | $3.29 | 4.6 | $ | - | $ | - | ||||||||||||||||||
|
Issued
|
924,302 | $ | 2.60 | $ | 2.61 | $2.60 | $2.61 | |||||||||||||||||||||||||||
|
Exercised
|
(285,386 | ) | $ | 2.53 | $ | 2.54 | $1.65 | - | $3.35 | $1.66 | - | $3.37 | ||||||||||||||||||||||
|
Balance, December 31, 2012
|
1,588,411 | $ | 3.00 | $ | 3.02 | $2.50 | - | $3.35 | $2.51 | - | $3.37 | 3.8 | 3,140,893 | 3,156,912 | ||||||||||||||||||||
|
Issued
|
- | - | - | - | - | |||||||||||||||||||||||||||||
|
Exercised
|
(573,683 | ) | $ | 3.19 | $ | 3.00 | $2.60 | - | $3.35 | $2.44 | - | $3.15 | - | |||||||||||||||||||||
|
Balance, December 31, 2013
|
1,014,728 | $ | 2.90 | $ | 2.72 | $2.60 | - | $3.35 | $2.44 | - | $3.15 | 2.7 | $ | 5,635,446 | $ | 5,298,447 | ||||||||||||||||||