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Note 2 - Summary of Significant Accounting Policies (Details) (USD $)
 0 Months Ended 1 Months Ended 2 Months Ended 3 Months Ended 12 Months Ended 1 Months Ended
Jan. 09, 2013
Nov. 30, 2014
Jan. 31, 2002
Dec. 31, 2014
Mar. 31, 2013
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Oct. 30, 2012
Oct. 31, 2013
Jul. 31, 2013
May 31, 1988
Note 2 - Summary of Significant Accounting Policies (Details) [Line Items]                        
Net Income (Loss) Attributable to Parent           $ (18,881,000)us-gaap_NetIncomeLoss $ (22,677,000)us-gaap_NetIncomeLoss $ (19,574,000)us-gaap_NetIncomeLoss        
Working Capital       14,900,000cdzi_WorkingCapital 17,500,000cdzi_WorkingCapital 14,900,000cdzi_WorkingCapital            
Net Cash Provided by (Used in) Operating Activities           (10,121,000)us-gaap_NetCashProvidedByUsedInOperatingActivities (15,767,000)us-gaap_NetCashProvidedByUsedInOperatingActivities (11,400,000)us-gaap_NetCashProvidedByUsedInOperatingActivities        
Convertible Debt         36,000,000us-gaap_ConvertibleDebt              
Proceeds from Lines of Credit         17,500,000us-gaap_ProceedsFromLinesOfCredit              
Shelf Registration Value                     40,000,000cdzi_ShelfRegistrationValue  
Proceeds from Issuance of Common Stock   14,600,000us-gaap_ProceedsFromIssuanceOfCommonStock       14,523,000us-gaap_ProceedsFromIssuanceOfCommonStock            
Stock Issued During Period, Shares, New Issues (in Shares)   1,435,713us-gaap_StockIssuedDuringPeriodSharesNewIssues                    
Shares Issued, Price Per Share (in Dollars per share)   $ 10.1751us-gaap_SharesIssuedPricePerShare                    
Share-based Compensation 373,000us-gaap_ShareBasedCompensation         1,077,000us-gaap_ShareBasedCompensation 516,000us-gaap_ShareBasedCompensation 383,000us-gaap_ShareBasedCompensation        
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in Shares)           0us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount            
Weighted Average Number Diluted Shares Outstanding Adjustment (in Shares)           8,237,000us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment 7,012,000us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment 2,996,000us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment        
Goodwill       3,813,000us-gaap_Goodwill   3,813,000us-gaap_Goodwill 3,813,000us-gaap_Goodwill 3,813,000us-gaap_Goodwill       7,006,000us-gaap_Goodwill
Goodwill, Amortized Portion     3,193,000cdzi_GoodwillAmortizedPortion                  
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                
Fair Value of Assets Acquired           2,500us-gaap_FairValueOfAssetsAcquired 923,000us-gaap_FairValueOfAssetsAcquired 1,090,000us-gaap_FairValueOfAssetsAcquired        
Income Taxes Paid           4,000us-gaap_IncomeTaxesPaid 5,700us-gaap_IncomeTaxesPaid 10,000us-gaap_IncomeTaxesPaid        
General and Administrative Expense [Member]                        
Note 2 - Summary of Significant Accounting Policies (Details) [Line Items]                        
Share-based Compensation           1,100,000us-gaap_ShareBasedCompensation
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_GeneralAndAdministrativeExpenseMember		 500,000us-gaap_ShareBasedCompensation
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_GeneralAndAdministrativeExpenseMember		 400,000us-gaap_ShareBasedCompensation
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_GeneralAndAdministrativeExpenseMember		        
Land Improvements and Buildings [Member] | Minimum [Member]                        
Note 2 - Summary of Significant Accounting Policies (Details) [Line Items]                        
Property, Plant and Equipment, Useful Life           10 years            
Land Improvements and Buildings [Member] | Maximum [Member]                        
Note 2 - Summary of Significant Accounting Policies (Details) [Line Items]                        
Property, Plant and Equipment, Useful Life           45 years            
Machinery and Equipment [Member] | Minimum [Member]                        
Note 2 - Summary of Significant Accounting Policies (Details) [Line Items]                        
Property, Plant and Equipment, Useful Life           5 years            
Machinery and Equipment [Member] | Maximum [Member]                        
Note 2 - Summary of Significant Accounting Policies (Details) [Line Items]                        
Property, Plant and Equipment, Useful Life           15 years            
Term Loan [Member]                        
Note 2 - Summary of Significant Accounting Policies (Details) [Line Items]                        
Debt Instrument, Face Amount         66,000,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_DebtInstrumentAxis
= cdzi_TermLoanMember		              
Proceeds from Lines of Credit                 5,000,000us-gaap_ProceedsFromLinesOfCredit
/ us-gaap_DebtInstrumentAxis
= cdzi_TermLoanMember		      
Non-Convertible Secured Debt (Member)                        
Note 2 - Summary of Significant Accounting Policies (Details) [Line Items]                        
Secured Debt         30,000,000us-gaap_SecuredDebt
/ us-gaap_DebtInstrumentAxis
= cdzi_NonConvertibleSecuredDebtMember		              
October 2013 Additional Debt Facility [Member] | Senior Lender [Member]                        
Note 2 - Summary of Significant Accounting Policies (Details) [Line Items]                        
Proceeds from Issuance of Secured Debt                   $ 10,000,000us-gaap_ProceedsFromIssuanceOfSecuredDebt
/ us-gaap_CounterpartyNameAxis
= cdzi_SeniorLenderMember
/ us-gaap_CreditFacilityAxis
= cdzi_October2013AdditionalDebtFacilityMember