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Note 12 - Commitments and Contingencies (Details) (USD $) | 1 Months Ended | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2014 | Dec. 31, 2014 | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Note 12 - Commitments and Contingencies (Details) [Line Items] |  |  |  |  |
Operating Leases, Rent Expense |  |  | $ 202,000 us-gaap_LeaseAndRentalExpense | $ 219,000 us-gaap_LeaseAndRentalExpense | $ 343,000 us-gaap_LeaseAndRentalExpense
Operating Leases, Future Minimum Payments Due, Next Twelve Months |  | 182,000 us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent | 182,000 us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent |  |
Loss Contingency, Pending Claims, Number |  |  |  | 6 us-gaap_LossContingencyPendingClaimsNumber | 9 us-gaap_LossContingencyPendingClaimsNumber
Loss Contingency, Claims Dismissed, Number | 6 us-gaap_LossContingencyClaimsDismissedNumber |  |  | 3 us-gaap_LossContingencyClaimsDismissedNumber |
Loss Contingency, Claims Appealed During Period, Number |  | 6 cdzi_LossContingencyClaimsAppealedDuringPeriodNumber |  |  |
Water Project [Member] |  |  |  |  |
Note 12 - Commitments and Contingencies (Details) [Line Items] |  |  |  |  |
Deferred Revenue |  | 750,000 us-gaap_DeferredRevenue / us-gaap_StatementBusinessSegmentsAxis = cdzi_WaterProjectMember | 750,000 us-gaap_DeferredRevenue / us-gaap_StatementBusinessSegmentsAxis = cdzi_WaterProjectMember |  |
In Exchange for Services [Member] |  |  |  |  |
Note 12 - Commitments and Contingencies (Details) [Line Items] |  |  |  |  |
Other Liabilities, Noncurrent |  | $ 923,000 us-gaap_OtherLiabilitiesNoncurrent / us-gaap_GainContingenciesByNatureAxis = cdzi_InExchangeForServicesMember | $ 923,000 us-gaap_OtherLiabilitiesNoncurrent / us-gaap_GainContingenciesByNatureAxis = cdzi_InExchangeForServicesMember |  |

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- Definition Amount of deferred revenue as of balance sheet date. Deferred revenue represents collections of cash or other assets related to a revenue producing activity for which revenue has not yet been recognized. Generally, an entity records deferred revenue when it receives consideration from a customer before achieving certain criteria that must be met for revenue to be recognized in conformity with GAAP. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 13 -Section A Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 605 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 13.A.4(a).Q1 Response) -URI http://asc.fasb.org/extlink&oid=27012821&loc=d3e214044-122780 + Details
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- Definition Number of pending claims pertaining to a loss contingency. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14435-108349 + Details
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- Definition Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41502-112717 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 10 -Section 55 -Paragraph 40 -Subparagraph (Note 3) -URI http://asc.fasb.org/extlink&oid=6584154&loc=d3e38371-112697 + Details
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- Definition Aggregate carrying amount, as of the balance sheet date, of noncurrent obligations not separately disclosed in the balance sheet. Noncurrent liabilities are expected to be paid after one year (or the normal operating cycle, if longer). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.24) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 24 -Article 5 + Details
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