CONSOLIDATED STATEMENTS OF COMPREHENSIVE (LOSS) INCOME (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Statement of Comprehensive Income [Abstract]
Net (loss) income	$ (51,969,323)	$ (42,221,497)	$ 4,097,849
Other comprehensive income (loss), before tax:
Foreign currency translation adjustments	(386,094)	267,809	(939,000)
Reclassification of currency translation adjustments related to sale of clinical trial services business (see Note 2 - Summary of Significant Accounting Policies)	2,336,201	0	0
Write-down of marketable securities	0	38,515	0
Net change in fair value of marketable securities	0	(915)	(55,815)
Other comprehensive income (loss), before tax	1,950,107	305,409	(994,815)
Income tax (benefit) expense related to items of other comprehensive (loss) income	(162,484)	14,951	(22,384)
Other comprehensive income (loss), net of tax	2,112,591	290,458	(972,431)
Comprehensive (loss) income	$ (49,856,732)	$ (41,931,039)	$ 3,125,418