Note 8 - Subsequent Event (Details Textual) - Subsequent Event [Member]	Jul. 31, 2019 USD ($) a	Jul. 13, 2019 a
SoCal Hemp JV LLC [Member]
Area of Real Estate Property		1,280
Lessee, Operating Lease, Term of Contract	5 years
Lessee, Operating Lease, Number of Renewals	3
Lessee, Operating Lease, Renewal Term	5 years
Lessee, Operating Lease Rental Expense Per Acre of Leased Property \| $	$ 500
SoCal Hemp JV LLC [Member] \| Maximum [Member]
Area of Real Estate Property	9,600
SoCal Hemp JV LLC [Member]
Equity Method Investment, Ownership Percentage	50.00%

The number of renewals under the operating lease of the lessee.

No definition available.

Name:	cdzi_LesseeOperatingLeaseNumberOfRenewals
Namespace Prefix:	cdzi_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

The amount of rental expense per acre of leased property for operating lease of the lessee.

+ References

No definition available.

+ Details

Name:	cdzi_LesseeOperatingLeaseRentalExpensePerAcreOfLeasedProperty
Namespace Prefix:	cdzi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Area of a real estate property.

+ References

No definition available.

+ Details

Name:	us-gaap_AreaOfRealEstateProperty
Namespace Prefix:	us-gaap_
Data Type:	num:areaItemType
Balance Type:	na
Period Type:	instant

- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571

+ Details

Name:	us-gaap_EquityMethodInvestmentOwnershipPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Term of lessee's operating lease renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918673-209980

+ Details

Name:	us-gaap_LesseeOperatingLeaseRenewalTerm
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	instant

- Definition

Term of lessee's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

+ Details

Name:	us-gaap_LesseeOperatingLeaseTermOfContract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	instant

- Details

Name:	us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_CounterpartyNameAxis=cdzi_SocalHempJvLlcMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=cdzi_SocalHempJvLlcMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: