Annual report pursuant to Section 13 and 15(d)

2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details Narrative)

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2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details Narrative) (USD $)
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Cash in excess of FDIC limits $ 2,130,366us-gaap_CashUninsuredAmount  
Allowance for doubtful accounts 100,000us-gaap_AllowanceForDoubtfulAccountsReceivable 400,000us-gaap_AllowanceForDoubtfulAccountsReceivable
Shipping and handling 57,885us-gaap_ShippingHandlingAndTransportationCosts 19,301us-gaap_ShippingHandlingAndTransportationCosts
Inventory 11,666,251us-gaap_InventoryNet 2,473,322us-gaap_InventoryNet
Allowance for obsolete inventory 0us-gaap_InventoryValuationReserves 0us-gaap_InventoryValuationReserves
Impairment of intangible assets 0us-gaap_GoodwillAndIntangibleAssetImpairment 0us-gaap_GoodwillAndIntangibleAssetImpairment
Uncertain tax positions 0us-gaap_LiabilityForUncertainTaxPositionsCurrent 0us-gaap_LiabilityForUncertainTaxPositionsCurrent
GERMANY    
Inventory $ 5,766,147us-gaap_InventoryNet
/ us-gaap_StatementGeographicalAxis
= country_DE
 
Accounts Receivable [Member] | One Customer    
Concentration percentage 62.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_AccountsReceivableMember
/ us-gaap_MajorCustomersAxis
= canv_OneCustomerMember
 
Sales Revenue, Net [Member] | Two Customers    
Concentration percentage 65.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueNetMember
/ us-gaap_MajorCustomersAxis
= canv_TwoCustomersMember