Consolidated Statements of Cash Flows (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Cash flows from operating activities:
Net income (loss)	$ 21,186,510	$ (1,074,354)	$ (9,895,255)
Less: Loss from discontinued operations, net of tax		5,705,228	6,499,869
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	8,439,405	6,683,434	5,586,699
Amortization of prepaid leases	432,744	494,888	412,098
Amortization of other intangible assets		162,256	217,798
Amortization of capital lease	29,629	35,268	39,368
Gain on deregistration of subsidiaries	(180,077)
(Gain) Loss on disposal of property, plant and equipment and land use rights	(4,329,473)	520,619	14,637
Provision (reversal of provision) for doubtful accounts and amount due from related parties	636,068	1,523,131	(240,309)
(Reversal of provision) provision for inventory reserve	(185,638)	(392,368)	1,164,384
Goodwill and other intangible assets impairment		1,012,410	1,437,005
Share-based compensation	2,364,004	1,742,646	2,599,646
Amortization of deferred charges			379,413
Changes in assets and liabilities
Decrease in notes receivable		136,120	301,065
Decrease (increase) in trade receivables	15,712,382	(25,558,193)	12,817,244
Decrease (increase) in due from related parties	174,821	(223,669)	379,350
(Increase) decrease in advances to suppliers	(2,796,954)	1,861,965	4,029,177
Decrease (increase) in inventories	2,981,566	29,780,377	(14,230,037)
Decrease in prepayments and other current assets	6,524	116,880	1,539,402
Decrease (increase) in income taxes receivable	1,414,961	3,563,618	(134,805)
(Increase) decrease in recoverable value-added taxes	(290,200)	5,920,846	(3,171,894)
(Increase) decrease in other receivables	(16,155,106)	(8,777,412)	1,880,244
Decrease in receivable from discontinued operations			(16,246,974)
Decrease (increase) in deferred tax assets	3,811,461	(53,722)	(1,880,239)
Increase (decrease) in notes payable	7,896,280	(378,112)	(3,035,613)
Increase in accounts payable	12,566,494	7,222,028	4,440,981
Increase (decrease) in accrued expenses	7,025,737	507,127	(1,918,210)
Increase (decrease) in income tax payable	1,345,604	(854,776)	(1,384,294)
(Decrease) increase in advances from customers	(2,952,747)	5,716,117	5,261,692
Decrease in due to related parties	(31,500)		(10,397,648)
(Decrease) increase in advances from employees and employee benefits and salary payable	(237,562)	3,100,402	2,804,427
Increase (decrease) in other payables	6,045,576	5,572,805	(4,686,995)
(Decrease) increase in unrecognized tax benefits, non-current	(2,780,205)	5,515,443	313,596
Increase (decrease) in deferred income	564,899	(1,423,835)	(3,936,454)
Net cash provided by (used in) continuing operations	62,695,203	48,157,167	(19,040,632)
Net cash provided by discontinued operations		38,990,050	24,585,529
Net cash provided by operating activities	62,695,203	87,147,217	5,544,897
Purchase of property, plant and equipment	(17,492,784)	(12,093,849)	(34,486,013)
Purchase of land use rights		(2,440,024)
Repayment of consideration receivable	10,199,540	29,615,356
Change in restricted cash	(6,940,157)	2,021,985	(2,293,973)
Proceeds from sale of property, plant and equipment and land use rights	13,281,137		32,182
Net cash (used in) provided by continuing operations	(952,264)	17,103,468	(36,747,804)
Net cash used in discontinued operations		(41,662,088)	(6,130,354)
Net cash used in investing activities	(952,264)	(24,558,620)	(42,878,158)
Proceeds from short term bank loans	62,447,498	53,187,374	62,998,197
Repayment of short term bank loans	(54,483,065)	(65,214,363)	(54,906,797)
Proceeds from long term bank loans			6,602,970
Repayment of long term bank loans	(5,930,927)	(5,484,119)	(7,435,665)
Redemption of redeemable common stock	(32,696,658)	(32,383,321)
Proceeds from other long term loans	25,852,951	33,369,627
Payment for long term deposits	(32,031,083)	(43,715,189)
Capital injection in subsidiary by noncontrolling interests			219,372
Dividend distributed to noncontrolling interest		(161,493)	(208,225)
Payment on capital lease obligations	(314,792)		(735,179)
Proceeds from option exercise			96,000
Net cash (used in) provided by continuing operations	(37,156,076)	(60,401,484)	6,630,673
Net cash used in discontinued operations		(5,340,631)	(1,022,902)
Net cash (used in) provided by financing activities	(37,156,076)	(65,742,115)	5,607,771
Effect of exchange rate changes on cash	484,565	977,818	1,090,140
Net increase (decrease) in cash and cash equivalents	25,071,428	(2,175,700)	(30,635,350)
Cash and cash equivalents, beginning of year	15,353,882	17,529,582	48,164,932
Cash and cash equivalents	40,425,310	15,353,882	17,529,582
Included in cash and cash equivalents per consolidated balance sheets	40,425,310	15,353,882	16,183,493
Included in assets of discontinued operations			1,346,089
Continuing operations
Cash paid during the year for income tax	(1,698,323)	(2,066,193)	(2,511,928)
Cash received during the year for tax refund	11,493,740	7,812,615	10,797,649
Interest paid during the year	(4,394,080)	(3,550,433)	(3,317,886)
Interest paid during the year		(921,225)	(1,479,245)
Issuance of performance shares of redeemable common stock			11,382,000
Settlement of consideration receivable by raw milk supply (See Note 7)	10,876,838	4,992,467
Settlement of redeemable common stock		1,033,735
Accretion of redemption premium on redeemable common stock			$ 1,086,622