Represents common stock threshold trading days.

No definition available.

Name:	cycc_CommonStockThresholdTradingDays
Namespace Prefix:	cycc_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents maximum amount of offering price for common stock.

+ References

No definition available.

+ Details

Name:	cycc_MaximumAmountOfOfferingPriceForCommonStock
Namespace Prefix:	cycc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The cash inflow from the additional capital contribution to the entity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Activities

-URI http://asc.fasb.org/extlink&oid=6513228

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 14

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3255-108585

+ Details

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

- Definition

The number of shares issued or sold by the subsidiary or equity method investee per stock transaction.

+ References

No definition available.

+ Details

Name:	us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Price of a single share of a number of saleable stocks of a company.

+ References

No definition available.

+ Details

Name:	us-gaap_SharePrice
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

+ Details

Name:	us-gaap_SubsequentEventLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

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

- Details

Name:	cycc_AgreementAxis=cycc_ControlledEquityOfferingSalesAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_TitleOfIndividualAxis=cycc_SalesAgentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	cycc_AgreementAxis=cycc_PurchaseAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=cycc_AspireCapitalFundLLCMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

SUBSEQUENT EVENTS (Detail Textuals) - USD ($) $ / shares in Units, $ in Thousands				6 Months Ended
	Aug. 04, 2015	Jul. 10, 2015	Jul. 08, 2015	Jun. 30, 2015	Jun. 30, 2014
Subsequent Event [Line Items]
Proceeds from issuance of common stock				$ 10,356	$ 10,965
Subsequent event
Subsequent Event [Line Items]
Minimum bid price per share	$ 1.00
Consecutive business days	10 days
Subsequent event \| Controlled Equity Offering Sales Agreement \| Cantor Fitzgerald & Co., ("Cantor")
Subsequent Event [Line Items]
Maximum amount of offering price for common stock		$ 8,350
Subsequent event \| Purchase Agreement \| Aspire Capital Fund, LLC
Subsequent Event [Line Items]
Common stock sold			314,424
Proceeds from issuance of common stock			$ 200