XML 46 R35.htm IDEA: XBRL DOCUMENT v3.20.1

COMMITMENTS AND CONTINGENCIES - Additional Information (Details) - Janssen - USD ($) $ in Millions	1 Months Ended		3 Months Ended	12 Months Ended
	Apr. 30, 2020	Jan. 31, 2020	Mar. 31, 2020	Dec. 31, 2020
Loss Contingencies [Line Items]
Percentage of development costs related to joint development of products			60.00%
Phase 3 Insomnia Trail
Loss Contingencies [Line Items]
Percentage of development costs related to joint development of products			40.00%
Development cost invoiced		$ 3.4	$ 6.5
Phase 3 Insomnia Trail | Forecast
Loss Contingencies [Line Items]
Estimated development costs				$ 100.0
Phase 3 Insomnia Trail | Subsequent Event
Loss Contingencies [Line Items]
Development cost invoiced	$ 3.1

X

- Definition

Development cost invoiced.

+ References

No definition available.

+ Details

Name:	nerv_DevelopmentCostInvoiced
Namespace Prefix:	nerv_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Estimated development costs.

+ References

No definition available.

+ Details

Name:	nerv_EstimatedDevelopmentCosts
Namespace Prefix:	nerv_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Represents the percentage of development costs related to joint development of any products for which the entity is responsible.

+ References

No definition available.

+ Details

Name:	nerv_PercentageOfDevelopmentCostsRelatedToJointDevelopmentOfProducts
Namespace Prefix:	nerv_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- 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

No definition available.

+ Details

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

X

- Details

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

X

- Details

Name:	us-gaap_ResearchAndDevelopmentArrangementContractToPerformForOthersByTypeAxis=nerv_PhaseThreeClinicalTrialsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_StatementScenarioAxis=srt_ScenarioForecastMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

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