CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (unaudited) (USD $)	Common Stock (US$0.001 par value)	Additional Paid-in Capital	Common Stock Warrants	Statutory Reserves	Accumulated Other Comprehensive Income	Retained Earnings	Noncontrolling Interest	Total
Balance at Dec. 31, 2011	$ 19,714	$ 58,920,283	$ 1,774,151	$ 11,341,427	$ 42,730,802	$ 60,696,815	$ 17,943	$ 175,501,135
Balance (in shares) at Dec. 31, 2011	19,714,291
Stock compensation		1,099,319						1,099,319
Net income						8,242,403	24,209	8,266,612
Other comprehensive income (loss)					(127,785)		7	(127,778)
Balance at Mar. 31, 2012	19,714	60,019,602	1,774,151	11,341,427	42,603,017	68,939,218	42,159	184,739,288
Balance (in shares) at Mar. 31, 2012	19,714,291
Balance at Dec. 31, 2012	19,784	61,284,217	1,774,151	13,450,739	45,487,528	79,741,209		201,757,628
Balance (in shares) at Dec. 31, 2012	19,784,291							19,784,291
Stock compensation		478,514						478,514
Net income						10,556,110		10,556,110
Other comprehensive income (loss)					855,809			855,809
Balance at Mar. 31, 2013	$ 19,784	$ 61,762,731	$ 1,774,151	$ 13,450,739	$ 46,343,337	$ 90,297,319		$ 213,648,061
Balance (in shares) at Mar. 31, 2013	19,784,291							19,784,291