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Intangible Assets (Tables)
 12 Months Ended
Dec. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of intangible assets
Intangible assets consisted of the following at December 31:
 
 
2015
 
2014
 
 
 
 
 
Product and license rights
 
$
18,011,362

 
$
16,477,749

Less: accumulated amortization
 
(3,541,305
)
 
(2,225,949
)
Total product and license rights
 
14,470,057

 
14,251,800

Patents
 
8,236,719

 
8,194,264

Less: accumulated amortization
 
(1,551,430
)
 
(877,523
)
Total patents
 
6,685,289

 
7,316,741

Trademarks
 
22,270

 
9,020

Less: accumulated amortization
 
(9,020
)
 
(9,020
)
Total trademarks
 
13,250

 
—

Total intangible assets
 
$
21,168,596

 
$
21,568,541
Schedule of expected amortization expense of intangible assets
The expected amortization expense for the Company's current balance of intangible assets are as follows:
Year ending December 31:
 
 
2016
 
$
2,103,553

2017
 
2,103,553

2018
 
2,103,553

2019
 
2,103,553

2020 and thereafter
 
12,754,384

 
 
$
21,168,596