CONDENSED CONSOLIDATED STATEMENTS OF INCOME AND COMPREHENSIVE INCOME (USD $)	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
NET REVENUE	$ 169,086,267	$ 136,931,096
Cost of sales	(150,451,275)	(120,023,023)
GROSS PROFIT	18,634,992	16,908,073
Selling expenses	(686,006)	(523,036)
General and administrative expenses	(2,097,834)	(1,573,312)
Income from operations	15,851,152	14,811,725
Other income (expenses):
Interest income	163,136	133,105
Interest expenses		(21,466)
Gain on extinguishment of warrant liabilities	73,291	60,724
Change in fair value of warrants	(430,000)	1,375,101
Other income	94,779	75,951
Total other income (expenses)	(98,794)	1,623,415
Income before income taxes	15,752,358	16,435,140
Provision for income taxes	(4,277,346)	(3,923,154)
NET INCOME	11,475,012	12,511,986
OTHER COMPREHENSIVE INCOME:
Foreign currency translation adjustments	208,402	1,664,517
COMPREHENSIVE INCOME	$ 11,683,414	$ 14,176,503
Net income per share
Basic	$ 0.39	$ 0.42
Diluted	$ 0.38	$ 0.41
Weighted average number of shares outstanding
Basic	29,800,624	29,858,780
Diluted	30,080,154	30,313,996