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Income Taxes (Details Textual) (USD $)
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Income Taxes (Textual)    
Effective income tax rate 25.00%us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes  
Increase in allowance for deferred tax assets $ 2,165,677us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount   
U.S. net operating loss carry forward 2,098,420us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsDomestic 0us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsDomestic
Income tax expense 4,561,030us-gaap_IncomeTaxExpenseBenefit 2,999,795us-gaap_IncomeTaxExpenseBenefit
Operating Income (Loss) 8,909,909us-gaap_OperatingIncomeLoss 11,393,000us-gaap_OperatingIncomeLoss
Operating loss carryforwards, expiration dates Through 2034  
Valuation allowance on deferred tax assets, percentage 100.00%cws_ValuationAllowanceOnDeferredTaxAssetPercentage  
Deferred tax assets benefit description Company has provided a 100% valuation allowance on the deferred tax asset benefit to reduce the asset to zero.  
Cumulative undistributed earnings 64,000,000us-gaap_UndistributedEarningsOfForeignSubsidiaries 60,000,000us-gaap_UndistributedEarningsOfForeignSubsidiaries
Valuation allowance related to net operating loss carry forward 2,098,420us-gaap_OperatingLossCarryforwardsValuationAllowance 1,844,921us-gaap_OperatingLossCarryforwardsValuationAllowance
United States [Member]    
Income Taxes (Textual)    
Operating Income (Loss) $ 6,172,000us-gaap_OperatingIncomeLoss
/ us-gaap_IncomeTaxAuthorityAxis
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