Collaborative Arrangement, Rights and Obligations, Development And Regulatory Milestone Payments, Maximum

No definition available.

Name:	cntx_CollaborativeArrangementRightsAndObligationsDevelopmentAndRegulatoryMilestonePaymentsMaximum
Namespace Prefix:	cntx_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Collaborative Arrangement, Rights and Obligations, Milestone Payment

+ References

No definition available.

+ Details

Name:	cntx_CollaborativeArrangementRightsAndObligationsMilestonePayment
Namespace Prefix:	cntx_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Collaborative Arrangement, Rights and Obligations, Quarterly Sales Payments, Percent

+ References

No definition available.

+ Details

Name:	cntx_CollaborativeArrangementRightsAndObligationsQuarterlySalesPaymentsPercent
Namespace Prefix:	cntx_
Data Type:	dtr-types1:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Collaborative Arrangement, Rights and Obligations, Sales Milestone Payments, Maximum

+ References

No definition available.

+ Details

Name:	cntx_CollaborativeArrangementRightsAndObligationsSalesMilestonePaymentsMaximum
Namespace Prefix:	cntx_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Research And Development Arrangement, Contract To Perform For Others, Upon Completion, Sales Payment Period

+ References

No definition available.

+ Details

Name:	cntx_CollaborativeArrangementRightsAndObligationsSalesPaymentPeriod
Namespace Prefix:	cntx_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Collaborative Arrangement, Rights and Obligations, Tiered Royalty, Percent

+ References

No definition available.

+ Details

Name:	cntx_CollaborativeArrangementRightsAndObligationsTieredRoyaltyPercent
Namespace Prefix:	cntx_
Data Type:	dtr-types1:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 730
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483041/730-20-50-1

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 730
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483041/730-20-50-1

+ Details

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

- Details

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

- Details

Name:	us-gaap_TypeOfArrangementAxis=us-gaap_CollaborativeArrangementTransactionWithPartyToCollaborativeArrangementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

Name:	us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis=cntx_ScaleUp100KilogramsOfGMPGradeCompoundMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis=cntx_ScaleUp300KilogramsOfGMPGradeCompoundMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Commitment and Contingencies - Collaboration Agreements (Details) - Collaborative Arrangement, Transaction with Party to Collaborative Arrangement - USD ($) $ in Millions	1 Months Ended
	Mar. 31, 2020	Sep. 30, 2023	Apr. 30, 2021
Tyligand
Research and Development Arrangement, Contract to Perform for Others [Line Items]
Quarterly sales payment due upon completion, percentage	1.00%
Quarterly sales payment due upon completion, period of payment	15 years
Integral
Research and Development Arrangement, Contract to Perform for Others [Line Items]
Maximum development and regulatory milestone payments		$ 55.0
Maximum sales milestone payments			$ 130.0
Tiered royalty payment, percent (up to)			12.00%
Scale-up, 100 kilograms of GMP-grade compound \| Tyligand
Research and Development Arrangement, Contract to Perform for Others [Line Items]
Milestone payment	$ 2.0
Scale-up, 300 kilograms of GMP-grade compound \| Tyligand
Research and Development Arrangement, Contract to Perform for Others [Line Items]
Milestone payment	$ 3.0