|
Significant Accounting Policies (Narrative) (Details) (USD $)
|
3 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|
|
Mar. 31, 2013
|
Mar. 31, 2012
|
Dec. 31, 2012
|
Dec. 31, 2011
|
|
| Significant Accounting Policies Details Narrative | ||||
| Restricted cash | $ 265,131 | $ 264,992 | ||
| Accrued interest | 466 | 327 | ||
| Letter of credit interest rate | 0.20% | 0.25% | ||
| Options to purchase common shares | 7,353,667 | 2,070,000 | 6,972,967 | |
| warrants to purchase common shares | 8,063,665 | 493,500 | 8,112,696 | |
| Convertible debt amount | $ 800,000 | $ 650,000 | $ 800,000 | |
| Convertible debt shares | 1,357,143 | 951,126 | 1,357,143 | |
| Warrants to purchase common shares outstanding | 456,000 | |||
| Convertible preferred shares | 15,403,006 | |||
| Preferred shares converted to common shares | 13,677,274 | |||