Consolidated Statements of Comprehensvie Income (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE (LOSS) INCOME [Abstract]
Net income (loss)	$ 9,917,273	$ 20,527,192	$ (21,830,682)
Other comprehensive income (loss):
Foreign currency translation	3,118	(13,721)	(1,123)
Unrealized gain (loss) on short term investments	175,201	(77,981)	0
COMPREHENSIVE INCOME (LOSS)	$ 10,095,592	$ 20,435,490	$ (21,831,805)