Represents the percentage of the company's stock that is purchasable through warrants or rights.

No definition available.

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Namespace Prefix:	ctdh_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents Nasdaq Listing Rule, Minimum Requirement for Stockholders Equity.

+ References

No definition available.

+ Details

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Namespace Prefix:	ctdh_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Exercise price per share or per unit of warrants or rights outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481112/505-10-50-3

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

The cash inflow from the issuance of common stock, preferred stock, treasury stock, stock options, and other types of equity.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 14
-Subparagraph (a)
-SubTopic 10
-Topic 230
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482740/230-10-45-14

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 3
-Subparagraph (SX 210.6-03(i)(1))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479886/946-10-S99-3

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Period between issuance and expiration of outstanding warrant and right embodying unconditional obligation requiring redemption by transferring asset at specified or determinable date or upon event certain to occur, 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
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482106/820-10-50-2

+ Details

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

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
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- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ClassOfWarrantOrRightAxis=ctdh_NewWarrantsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_SubsidiarySaleOfStockAxis=us-gaap_PrivatePlacementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_SubsidiarySaleOfStockAxis=ctdh_RafaelPrivatePlacementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Note 12 - Subsequent Events (Details Textual) - USD ($) $ / shares in Units, shares in Millions	Oct. 20, 2023	Aug. 01, 2023	Apr. 20, 2023	Sep. 30, 2023	May 14, 2023
Nasdaq Listing Rule, Minimum Requirement for Stockholders Equity		$ 2,500,000		$ 2,500,000	$ 2,500,000
Subsequent Event [Member] \| Original Warrants [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)	3.4
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)	$ 0.71
Subsequent Event [Member] \| New Warrants [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)	$ 0.95
Class of Warrant or Right, Percentage of Company's Stock Purchasable	110.00%
Warrants and Rights Outstanding, Term (Year)	4 years
Private Placement [Member]
Proceeds from Issuance or Sale of Equity			$ 1,305,000
Private Placement [Member] \| Subsequent Event [Member]
Proceeds from Issuance or Sale of Equity	$ 2,400,000
Rafael Private Placement [Member]
Proceeds from Issuance or Sale of Equity		$ 5,000,000