CONDENSED CONSOLIDATED BALANCE SHEETS (unaudited) (USD $)	Mar. 31, 2013	Dec. 31, 2012
Current assets:
Cash and cash equivalents	$ 14,892,735	$ 40,425,310
Restricted cash	1,465,359	8,081,061
Trade receivables, net of allowance for doubtful accounts of $1,459,309 and $1,454,741, as of March 31, 2013 and December 31, 2012, respectively	18,952,195	24,535,601
Notes and loans receivable, net of allowance for doubtful accounts of $3,350,056, as of March 31, 2013 and December 31, 2012, respectively
Due from related parties	24,075	20,191
Advances to suppliers	12,956,338	14,805,607
Inventories, net	29,137,477	30,838,292
Prepayments and other current assets	37,352	43,779
Recoverable value-added taxes	1,393,997	1,269,443
Loans and advances to third parties	60,879,155	30,473,435
Consideration receivable	75,907,867	78,274,528
Deferred tax assets	3,425,598	3,425,598
Investment in mutual funds - available-for-sale	119,483	117,210
Assets held for sale	2,416,333	2,408,770
Total current assets	221,607,964	234,718,825
Investments:
Investment at cost	289,821	288,914
Investments	289,821	288,914
Property, plant and equipment:
Property, plant and equipment, net	113,265,430	114,990,808
Construction in progress	21,021,622	17,996,885
Property Plant and Equipment Including Construction in Progress	134,287,052	132,987,693
Other assets:
Advances to suppliers - non-current	11,989,369	10,149,090
Long term loan receivables	79,266,427	79,018,330
Deferred tax assets - non-current	730,163	2,568,642
Prepaid leases for land use rights	16,429,133	16,524,390
Total assets	464,599,929	476,255,884
Current liabilities:
Notes payable		7,996,533
Short term bank loans	61,828,779	63,240,345
Accounts payable	41,237,423	41,115,131
Accrued expenses	10,779,092	14,193,225
Income tax payable	2,393,860	2,128,545
Advances from customers	16,225,424	15,092,328
Due to related parties	138,524	55,276
Advances from employees	80,023	225,835
Employee benefits and salary payable	10,668,699	9,758,312
Other payables	25,464,200	38,683,732
Current portion of long term bank loans	6,023,349	6,004,497
Current portion of capital lease obligation	139,973	137,722
Total current liabilities	174,979,346	198,631,481
Capital lease obligation, net of current portion	301,756	296,856
Other long term loans	59,222,577	59,222,577
Unrecognized tax benefits - non-current	12,193,729	12,026,563
Deferred income	4,254,460	4,320,779
Total liabilities	250,951,868	274,498,256
Commitments and contingencies (see Note 21)
Equity
Common stock (US$0.001 par value, 50,000,000 shares authorized; 19,784,291 shares issued and outstanding as of March 31, 2013 and December 31, 2012)	19,784	19,784
Additional paid-in capital	61,762,731	61,284,217
Common stock warrants	1,774,151	1,774,151
Statutory reserves	13,450,739	13,450,739
Accumulated other comprehensive income	46,343,337	45,487,528
Retained earnings	90,297,319	79,741,209
Total shareholders' equity	213,648,061	201,757,628
Total liabilities and equity	$ 464,599,929	$ 476,255,884