2. Summary of Significant Accounting Policies (Details) - shares |
3 Months Ended | 12 Months Ended |
|---|---|---|
Mar. 31, 2017 |
Dec. 31, 2016 |
|
| Anti-dilutive shares exluded from the calculation of earnings per share | 1,526,005 | 1,346,441 |
| Options to purchase common stock | ||
| Anti-dilutive shares exluded from the calculation of earnings per share | 151,881 | 151,881 |
| Warrants to purchase common stock | ||
| Anti-dilutive shares exluded from the calculation of earnings per share | 151,563 | 152,812 |
| Convertible notes | ||
| Anti-dilutive shares exluded from the calculation of earnings per share | 1,222,561 | 1,041,748 |