Condensed Consolidated Statements of Operations and Comprehensive Income (Unaudited) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Product revenue	$ 21,975,312	$ 17,023,346	$ 57,593,873	$ 51,585,242
Licensing, milestone and contract revenue	80,111	731,092	24,746,497	2,244,584
Total revenue	22,055,423	17,754,438	82,340,370	53,829,826
Operating expenses:
Cost of product revenue	5,724,800	5,377,568	15,418,732	16,530,070
Research & development	1,999,867	1,618,012	6,160,740	5,029,974
Selling, general & administrative	4,044,538	3,188,669	11,401,399	10,536,462
Restructuring credits	(196,084)	(196,084)		(442,869)
Total operating expenses	11,769,205	9,988,165	32,980,871	31,653,637
Income from operations	10,286,218	7,766,273	49,359,499	22,176,189
Interest income (expense), net	9,937	(32,816)	16,339	(108,755)
Income before income taxes	10,296,155	7,733,457	49,375,838	22,067,434
Provision for income taxes	4,125,355	2,776,199	18,872,435	8,147,282
Net income	6,170,800	4,957,258	30,503,403	13,920,152
Unrealized gain on securities, net of tax	431		431
Foreign currency translation adjustment	(1,679,968)	916,474	(1,896,823)	507,119
Total other comprehensive income (loss)	(1,679,537)	916,474	(1,896,392)	507,119
Basic net income per share:
Net income (in Dollars per share)	$ 0.42	$ 0.36	$ 2.09	$ 1.03
Basic weighted average common shares outstanding (in Shares)	14,758,781	13,682,449	14,626,933	13,534,334
Diluted net income per share:
Net income (in Dollars per share)	$ 0.40	$ 0.33	$ 1.97	$ 0.95
Diluted weighted average common shares outstanding (in Shares)	15,434,875	14,958,965	15,469,237	14,673,879
Net income	6,170,800	4,957,258	30,503,403	13,920,152
Unrealized gain on securities, net of tax	431		431
Foreign currency translation adjustment	(1,679,968)	916,474	(1,896,823)	507,119
Total other comprehensive income (loss)	(1,679,537)	916,474	(1,896,392)	507,119
Comprehensive income	$ 4,491,263	$ 5,873,732	$ 28,607,011	$ 14,427,271