|
Intangible Assets (Details) (USD $)
|
3 Months Ended | 3 Months Ended | 12 Months Ended | ||||||
|---|---|---|---|---|---|---|---|---|---|
|
Mar. 31, 2014
|
Mar. 31, 2013
|
Dec. 31, 2013
|
Mar. 31, 2014
License agreements
|
Dec. 31, 2013
License agreements
|
Mar. 31, 2014
License agreements
Minimum
|
Mar. 31, 2014
License agreements
Maximum
|
Mar. 31, 2014
Patents
|
Dec. 31, 2013
Patents
|
|
| Intangible assets consist of: | |||||||||
| Finite-lived intangible assets, gross | $ 821,231 | $ 816,300 | $ 65,968 | $ 62,553 | |||||
| Less: accumulated amortization | (319,412) | (308,457) | |||||||
| Intangible assets, net | 567,787 | 570,396 | |||||||
| Amortization period of intangible assets | 17 years | 20 years | 3 years | ||||||
| Non-amortizable pending costs | 62,553 | ||||||||
| Amortization of intangible assets | $ 10,955 | $ 14,687 | |||||||