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Intangible Assets (Tables)
 12 Months Ended
Dec. 31, 2016
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of intangible assets
Intangible assets consisted of the following at December 31:
 
 
2016
 
2015
 
 
 
 
 
Product and license rights
 
$
20,543,262

 
$
18,011,362

Less: accumulated amortization
 
(4,988,333
)
 
(3,541,305
)
Total product and license rights
 
15,554,929

 
14,470,057

Patents
 
8,844,994

 
8,236,719

Less: accumulated amortization
 
(2,298,442
)
 
(1,551,430
)
Total patents
 
6,546,552

 
6,685,289

Trademarks
 
61,715

 
22,270

Less: accumulated amortization
 
(9,020
)
 
(9,020
)
Total trademarks
 
52,695

 
13,250

Total intangible assets
 
$
22,154,176

 
$
21,168,596
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:
 
 
2017
 
$
2,320,093

2018
 
2,338,260

2019
 
2,392,760

2020
 
2,392,760

2021 and thereafter
 
12,710,303

 
 
$
22,154,176