Annual report pursuant to Section 13 and 15(d)

Condensed Parent Company Financial Information (Details)

v2.4.1.9
Condensed Parent Company Financial Information (Details) (USD $)
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
ASSETS        
Cash $ 12,752,272us-gaap_CashAndCashEquivalentsAtCarryingValue $ 8,156,599us-gaap_CashAndCashEquivalentsAtCarryingValue $ 171,923,360us-gaap_CashAndCashEquivalentsAtCarryingValue $ 114,204,340us-gaap_CashAndCashEquivalentsAtCarryingValue
Prepaid expenses 32,913us-gaap_PrepaidExpenseCurrent 4,309,574us-gaap_PrepaidExpenseCurrent    
Other receivables 22,656,232us-gaap_OtherReceivablesNetCurrent 11,665us-gaap_OtherReceivablesNetCurrent    
Total current assets 105,913,623us-gaap_AssetsCurrent 30,706,704us-gaap_AssetsCurrent    
Other assets        
Property, plant and equipment 109,980,617us-gaap_PropertyPlantAndEquipmentNet 101,970,707us-gaap_PropertyPlantAndEquipmentNet    
Total Assets 249,030,185us-gaap_Assets 170,131,512us-gaap_Assets    
Current liabilities        
Accrued liabilities and other payables 5,602,307us-gaap_AccruedLiabilitiesAndOtherLiabilities 4,643,272us-gaap_AccruedLiabilitiesAndOtherLiabilities    
Due to related parties 2,373,352us-gaap_DueToRelatedPartiesCurrent       
Total Liabilities 99,771,251us-gaap_Liabilities 105,290,077us-gaap_Liabilities    
Shareholders' equity        
Ordinary shares ($0.001 par value; 225,000,000 shares authorized; 79,055,053 shares issued and outstanding at December 31, 2014 and 2013) 79,055us-gaap_CommonStockValue 79,055us-gaap_CommonStockValue    
Additional paid-in capital 117,525,377us-gaap_AdditionalPaidInCapitalCommonStock 117,525,377us-gaap_AdditionalPaidInCapitalCommonStock    
Retained earnings (accumulated deficit) 21,315,710us-gaap_RetainedEarningsAccumulatedDeficit (63,654,445)us-gaap_RetainedEarningsAccumulatedDeficit    
Accumulated other comprehensive income 3,925,900us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax 4,478,556us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax    
Total shareholders' equity 149,258,934us-gaap_StockholdersEquity 64,841,435us-gaap_StockholdersEquity 397,315,984us-gaap_StockholdersEquity 284,428,406us-gaap_StockholdersEquity
Total liabilities and equity 249,030,185us-gaap_LiabilitiesAndStockholdersEquity 170,131,512us-gaap_LiabilitiesAndStockholdersEquity    
Parent [Member]        
ASSETS        
Cash 399,849us-gaap_CashAndCashEquivalentsAtCarryingValue
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_ParentMember
246,684us-gaap_CashAndCashEquivalentsAtCarryingValue
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_ParentMember
     
Prepaid expenses 2,819us-gaap_PrepaidExpenseCurrent
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_ParentMember
2,820us-gaap_PrepaidExpenseCurrent
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_ParentMember
   
Other receivables 64us-gaap_OtherReceivablesNetCurrent
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_ParentMember
      
Investments in VIEs at equity 125,961,030us-gaap_EquityMethodInvestmentAggregateCost
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_ParentMember
38,446,318us-gaap_EquityMethodInvestmentAggregateCost
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_ParentMember
   
Total current assets 126,363,762us-gaap_AssetsCurrent
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_ParentMember
38,695,822us-gaap_AssetsCurrent
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_ParentMember
   
Other assets        
Property, plant and equipment 25,289,869us-gaap_PropertyPlantAndEquipmentNet
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_ParentMember
26,347,285us-gaap_PropertyPlantAndEquipmentNet
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_ParentMember
   
Total Assets 151,653,631us-gaap_Assets
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_ParentMember
65,043,107us-gaap_Assets
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_ParentMember
   
Current liabilities        
Accrued liabilities and other payables 21,345us-gaap_AccruedLiabilitiesAndOtherLiabilities
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_ParentMember
201,672us-gaap_AccruedLiabilitiesAndOtherLiabilities
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_ParentMember
   
Due to related parties 2,373,352us-gaap_DueToRelatedPartiesCurrent
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_ParentMember
      
Total Liabilities 2,394,697us-gaap_Liabilities
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_ParentMember
201,672us-gaap_Liabilities
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_ParentMember
   
Shareholders' equity        
Ordinary shares ($0.001 par value; 225,000,000 shares authorized; 79,055,053 shares issued and outstanding at December 31, 2014 and 2013) 79,055us-gaap_CommonStockValue
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_ParentMember
79,055us-gaap_CommonStockValue
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_ParentMember
   
Additional paid-in capital 117,525,377us-gaap_AdditionalPaidInCapitalCommonStock
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_ParentMember
117,525,377us-gaap_AdditionalPaidInCapitalCommonStock
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_ParentMember
   
Retained earnings (accumulated deficit) 27,728,602us-gaap_RetainedEarningsAccumulatedDeficit
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_ParentMember
(57,241,553)us-gaap_RetainedEarningsAccumulatedDeficit
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_ParentMember
   
Accumulated other comprehensive income 3,925,900us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_ParentMember
4,478,556us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_ParentMember
   
Total shareholders' equity 149,258,934us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_ParentMember
64,841,435us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_ParentMember
   
Total liabilities and equity $ 151,653,631us-gaap_LiabilitiesAndStockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_ParentMember
$ 65,043,107us-gaap_LiabilitiesAndStockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_ParentMember