Common stock market price premium percentage.

No definition available.

Name:	CYTR_CommonStockMarketPricePremiumPercentage
Namespace Prefix:	CYTR_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Payments for milestone.

+ References

No definition available.

+ Details

Name:	CYTR_PaymentsForMilestone
Namespace Prefix:	CYTR_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Payments for reimbursement.

+ References

No definition available.

+ Details

Name:	CYTR_PaymentsForReimbursement
Namespace Prefix:	CYTR_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Percentage of service charge.

+ References

No definition available.

+ Details

Name:	CYTR_PercentageOfServiceCharge
Namespace Prefix:	CYTR_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Repayment received or receivable for expenses incurred on behalf of a client or customer, other than those reimbursements received by landlords from tenants.

+ References

No definition available.

+ Details

Name:	CYTR_ReimbursementRevenues
Namespace Prefix:	CYTR_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(i)(4))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

+ Details

Name:	us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
Namespace Prefix:	us-gaap_
Data Type:	num: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

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(i)(2))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

+ Details

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

- Definition

Sum of the carrying amounts as of the balance sheet date of all investments.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.1(h))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

+ Details

Name:	us-gaap_Investments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The amount of consideration recognized during the period for the milestone or milestones.

+ References

No definition available.

+ Details

Name:	us-gaap_RevenueRecognitionMilestoneMethodRevenueRecognized
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Per share or per unit amount of equity securities issued.

+ References

No definition available.

+ Details

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

- Definition

Expiration date 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 CCYY-MM-DD format.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)
-URI http://asc.fasb.org/extlink&oid=99377789&loc=d3e19207-110258

+ Details

Name:	us-gaap_WarrantsAndRightsOutstandingMaturityDate
Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	instant

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=CYTR_EMAMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=CYTR_FDAMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

Name:	us-gaap_TypeOfArrangementAxis=CYTR_ReimbursementAgreementMember
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:	dei_LegalEntityAxis=CYTR_OrphazymeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Description of Company and Basis of Presentation (Details Narrative) - USD ($)			1 Months Ended	9 Months Ended	12 Months Ended
	Oct. 03, 2017	Jul. 27, 2017	Sep. 30, 2018	Sep. 30, 2018	Dec. 31, 2011	Jun. 01, 2018
Percentage of service charge						5.00%
Cash investment		$ 13,000,000
Investment in common stock per share		$ 6.60
Common stock market price premium percentage		92.00%
Number of warrants issued to purchase shares of common stock		500,000
Warrants exercise price per share		$ 6.60
Warrant expiration		Jan. 26, 2019
Milestone payments receivable		$ 343,000,000	$ 250,000
EMA [Member]
Payments for milestone				$ 4,000,000
FDA [Member]
Payments for milestone				$ 6,000,000
NantCell, Inc [Member] \| Reimbursement Agreement [Member] \| Maximum [Member]
Payments for reimbursement	$ 4,200,000
Anticipated reimbursement	$ 3,400,000
Orphazyme [Member]
Milestone payments receivable					$ 120,000,000