Condensed Consolidated Statements of Operations and Comprehensive Income (Unaudited) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Product revenue	$ 14,351,405	$ 14,494,489
Licensing, milestone and contract revenue	19,658,882	752,522
Total revenue	34,010,287	15,247,011
Operating expenses:
Cost of product revenue	4,361,019	4,841,170
Research & development	2,287,715	1,582,910
Selling, general & administrative	3,490,985	3,947,114
Restructuring credits	(135,607)	(135,607)
Total operating expenses	10,139,719	10,235,587
Income from operations	23,870,568	5,011,424
Interest income (expense), net	467	(39,558)
Income before income taxes	23,871,035	4,971,866
Provision for income taxes	8,840,782	1,903,864
Net income	15,030,253	3,068,002
Basic net income per share:
Net income (in Dollars per share)	$ 1.04	$ 0.23
Basic weighted average common shares outstanding (in Shares)	14,461,367	13,406,952
Diluted net income per share:
Net income (in Dollars per share)	$ 0.97	$ 0.21
Diluted weighted average common shares outstanding (in Shares)	15,499,447	14,357,110
Net income	15,030,253	3,068,002
Other comprehensive income
Foreign currency translation adjustment	(26,116)	(749,450)
Comprehensive income	$ 15,004,137	$ 2,318,552