Represents net number of share other than options (or share units) granted during the period.

No definition available.

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Namespace Prefix:	cycc_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the forfeiture rate used to estimate the pre-vesting option forfeitures.

+ References

No definition available.

+ Details

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Namespace Prefix:	cycc_
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Balance Type:	na
Period Type:	instant

- Definition

Represents the income expense recognized due to revision of the forfeiture rate.

+ References

No definition available.

+ Details

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Namespace Prefix:	cycc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- References

No definition available.

+ Details

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

- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(1)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

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

- 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:
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- Details

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Namespace Prefix:
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- Details

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Stock-Based Compensation Arrangements (Detail Textuals 2) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Stock options
Stock based compensation, additional disclosures
Income (expense) recognized due to revision of forfeiture rate	$ 0.1	$ 0.5
Stock options \| Minimum
Stock based compensation, additional disclosures
Forfeiture rate (as a percent)	0.00%
Stock options \| Maximum
Stock based compensation, additional disclosures
Forfeiture rate (as a percent)	30.00%
Restricted Stock Units
Stock based compensation, additional disclosures
Income (expense) recognized due to revision of forfeiture rate		$ 0.5
Granted (in shares)			85,097
Restricted stock units, net of forfeitures		80,969