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Note 6 - Long-term Debt (Details) (USD $)
 1 Months Ended 2 Months Ended 12 Months Ended 0 Months Ended
Mar. 31, 2013
Dec. 31, 2014
Dec. 31, 2014
Dec. 31, 2013
Oct. 30, 2013
Note 6 - Long-term Debt (Details) [Line Items]          
Long-term Debt   $ 106,204,000us-gaap_LongTermDebt $ 106,204,000us-gaap_LongTermDebt    
Long-term Debt, Term 3 years        
Convertible Debt 36,000,000us-gaap_ConvertibleDebt        
Convertible Debt, Term 5 years        
Working Capital 17,500,000cdzi_WorkingCapital 14,900,000cdzi_WorkingCapital 14,900,000cdzi_WorkingCapital    
Debt Instrument, Interest Rate, Stated Percentage 7.00%us-gaap_DebtInstrumentInterestRateStatedPercentage        
Debt Instrument, Convertible, Conversion Price (in Dollars per share) $ 8.05us-gaap_DebtInstrumentConvertibleConversionPrice1        
Gains (Losses) on Extinguishment of Debt       (1,055,000)us-gaap_GainsLossesOnExtinguishmentOfDebt  
Legal Fees 1,200,000us-gaap_LegalFees        
Stock Issued During Period, Value, Conversion of Convertible Securities   314,000us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecurities 311,000us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecurities    
Stock Issued During Period, Shares, Conversion of Convertible Securities (in Shares)   39,037us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities      
Credit Agreement [Member] | Senior Secured Mortgage Loan [Member]          
Note 6 - Long-term Debt (Details) [Line Items]          
Debt Instrument, Interest Rate, Stated Percentage         8.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= cdzi_SeniorSecuredMortgageLoanMember
/ us-gaap_StatementScenarioAxis
= cdzi_CreditAgreementMember
Secured Debt         10,000,000us-gaap_SecuredDebt
/ us-gaap_DebtInstrumentAxis
= cdzi_SeniorSecuredMortgageLoanMember
/ us-gaap_StatementScenarioAxis
= cdzi_CreditAgreementMember
Debt Instrument, Covenant Term, Maximum Percentage of Sales Can Be Retained         50.00%cdzi_DebtInstrumentCovenantTermMaximumPercentageOfSalesCanBeRetained
/ us-gaap_DebtInstrumentAxis
= cdzi_SeniorSecuredMortgageLoanMember
/ us-gaap_StatementScenarioAxis
= cdzi_CreditAgreementMember
Debt Instrument Covenant Terms, First Sales, Amount Portion of Which Can Be Retained         10,000,000cdzi_DebtInstrumentCovenantTermsFirstSalesAmountPortionOfWhichCanBeRetained
/ us-gaap_DebtInstrumentAxis
= cdzi_SeniorSecuredMortgageLoanMember
/ us-gaap_StatementScenarioAxis
= cdzi_CreditAgreementMember
Debt Issuance Cost         110,000us-gaap_DebtIssuanceCosts
/ us-gaap_DebtInstrumentAxis
= cdzi_SeniorSecuredMortgageLoanMember
/ us-gaap_StatementScenarioAxis
= cdzi_CreditAgreementMember
Corporate Term Debt [Member]          
Note 6 - Long-term Debt (Details) [Line Items]          
Long-term Debt 66,000,000us-gaap_LongTermDebt
/ us-gaap_DebtInstrumentAxis
= cdzi_CorporateTermDebtMember		        
Senior Secured Mortgage Loan [Member]          
Note 6 - Long-term Debt (Details) [Line Items]          
Mortgage Loans on Real Estate 30,000,000us-gaap_MortgageLoansOnRealEstate
/ us-gaap_DebtInstrumentAxis
= cdzi_SeniorSecuredMortgageLoanMember		        
Debt Instrument, Interest Rate, Stated Percentage 8.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= cdzi_SeniorSecuredMortgageLoanMember		        
Convertible Bond [Member]          
Note 6 - Long-term Debt (Details) [Line Items]          
Convertible Debt 53,500,000us-gaap_ConvertibleDebt
/ us-gaap_DebtInstrumentAxis
= cdzi_ConvertibleBondMember		        
Includes Legal Fees for Debt Refinancing [Member]          
Note 6 - Long-term Debt (Details) [Line Items]          
Gains (Losses) on Extinguishment of Debt 1,060,000us-gaap_GainsLossesOnExtinguishmentOfDebt
/ us-gaap_DebtInstrumentAxis
= cdzi_IncludesLegalFeesForDebtRefinancingMember		        
MSD Credit [Member]          
Note 6 - Long-term Debt (Details) [Line Items]          
Stock Issued During Period, Shares, Issued for Services (in Shares)         700,000us-gaap_StockIssuedDuringPeriodSharesIssuedForServices
/ us-gaap_CounterpartyNameAxis
= cdzi_MSDCreditMember
Stock Issued During Period, Value, Issued for Services         $ 2,400,000us-gaap_StockIssuedDuringPeriodValueIssuedForServices
/ us-gaap_CounterpartyNameAxis
= cdzi_MSDCreditMember