Equity (Schedule of Options Outstanding and Exercisable) (Details) (USD $) | 3 Months Ended |
Mar. 31, 2015 |
Options outstanding | |
Number outstanding | 1,966,333 |
Weighted average remaining contractual life | 3 years 6 months 29 days |
Options exercisable | |
Number outstanding | 722,335 |
Weighted average remainging cotractual life | 3 years |
$0.03 [Member] | |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] | |
Lower limit | 0.03 |
Upper limit | 0.03 |
Options outstanding | |
Number outstanding | 18,000 |
Weighted average remaining contractual life | 1 year 1 month 6 days |
Weighted average exercise price | 0.03 |
Options exercisable | |
Number outstanding | 18,000 |
Weighted average remainging cotractual life | 1 year 1 month 6 days |
Weighted average exercise price | 0.03 |
$0.90 [Member] | |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] | |
Lower limit | 0.9 |
Upper limit | 0.9 |
Options outstanding | |
Number outstanding | 231,000 |
Weighted average remaining contractual life | 3 years 6 months 7 days |
Weighted average exercise price | 0.9 |
Options exercisable | |
Number outstanding | 175,666 |
Weighted average remainging cotractual life | 3 years 5 months 16 days |
Weighted average exercise price | 0.9 |
$1.08 - $1.42 [Member] | |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] | |
Lower limit | 1.08 |
Upper limit | 1.42 |
Options outstanding | |
Number outstanding | 138,000 |
Weighted average remaining contractual life | 1 year 11 months 16 days |
Weighted average exercise price | 1.09 |
Options exercisable | |
Number outstanding | 88,000 |
Weighted average remainging cotractual life | 1 year 11 months 19 days |
Weighted average exercise price | 1.1 |
$1.46 [Member] | |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] | |
Lower limit | 1.46 |
Upper limit | 1.46 |
Options outstanding | |
Number outstanding | 155,000 |
Weighted average remaining contractual life | 3 years 4 months 20 days |
Weighted average exercise price | 1.46 |
Options exercisable | |
Number outstanding | 18,333 |
Weighted average remainging cotractual life | 3 years 3 months 22 days |
Weighted average exercise price | 1.46 |
$1.67 - $2.08 [Member] | |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] | |
Lower limit | 1.67 |
Upper limit | 2.08 |
Options outstanding | |
Number outstanding | 194,500 |
Weighted average remaining contractual life | 3 years 7 months 6 days |
Weighted average exercise price | 1.7 |
Options exercisable | |
Number outstanding | 59,500 |
Weighted average remainging cotractual life | 1 year 4 months 13 days |
Weighted average exercise price | 1.72 |
$2.24 - $2.58 [Member] | |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] | |
Lower limit | 2.24 |
Upper limit | 2.58 |
Options outstanding | |
Number outstanding | 979,833 |
Weighted average remaining contractual life | 3 years 10 months 10 days |
Weighted average exercise price | 2.37 |
Options exercisable | |
Number outstanding | 279,503 |
Weighted average remainging cotractual life | 3 years 3 months 7 days |
Weighted average exercise price | 2.34 |
$3.18 - $3.23 [Member] | |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] | |
Lower limit | 3.18 |
Upper limit | 3.23 |
Options outstanding | |
Number outstanding | 250,000 |
Weighted average remaining contractual life | 3 years 8 months 16 days |
Weighted average exercise price | 3.21 |
Options exercisable | |
Number outstanding | 83,333 |
Weighted average remainging cotractual life | 3 years 8 months 16 days |
Weighted average exercise price | 3.21 |