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CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)
Dec. 31, 2014
Dec. 31, 2013
CONSOLIDATED BALANCE SHEETS    
Accounts receivable trade, allowance $ 31,816,900us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent $ 38,482,827us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent
Advances to suppliers, allowance 9,300,887csiq_AllowanceForDoubtfulAdvancesToSuppliersCurrent 10,086,278csiq_AllowanceForDoubtfulAdvancesToSuppliersCurrent
Advances to suppliers, allowance $ 28,434,541csiq_AllowanceForDoubtfulAdvancesToSuppliersNoncurrent $ 29,960,552csiq_AllowanceForDoubtfulAdvancesToSuppliersNoncurrent
Common share, par value (in dollars per share) $ 0us-gaap_CommonStockParOrStatedValuePerShare $ 0us-gaap_CommonStockParOrStatedValuePerShare
Common shares, shares issued (in shares) 55,161,856us-gaap_CommonStockSharesIssued 51,034,343us-gaap_CommonStockSharesIssued
Common shares, shares outstanding (in shares) 55,161,856us-gaap_CommonStockSharesOutstanding 51,034,343us-gaap_CommonStockSharesOutstanding