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Schedule - Valuation and Qualifying Accounts (Details) - Valuation and Qualifying Accounts (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Valuation and Qualifying Accounts [Abstract] |  |  |
Deferred tax asset valuation allowance-Balance Begining of Period | $ 60,041 | $ 54,788 | $ 50,312
Deferred tax asset valuation allowance-Additional Charged to Cost and Expense | 5,231 | 5,253 | 4,476
Deferred tax asset valuation allowance-Balance at End of Period | $ 65,272 | $ 60,041 | $ 54,788

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- Definition Tax valuation allowance additions charged to costs and expenses. + References No definition available. + Details
Name: | cdzi_TaxValuationAllowanceAdditionsChargedToCostsAndExpenses
Namespace Prefix: | cdzi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319 + Details
Name: | us-gaap_DeferredTaxAssetsValuationAllowance
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Details
Name: | us-gaap_ValuationAndQualifyingAccountsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration