Represents the amount of additional tenant improvement allowance.

No definition available.

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

- Definition

Represents the annual percentage increase in monthly rental cost under lease agreement.

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
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- Definition

Represents the amount of the monthly operating cost due under lease agreement entered into by the reporting entity.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Represents the amount of the monthly rental payments due under lease agreement entered into by the reporting entity.

+ References

No definition available.

+ Details

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Namespace Prefix:	resn_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Represents the period after which the monthly rental under lease agreement starts increasing.

+ References

No definition available.

+ Details

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Namespace Prefix:	resn_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Area of a real estate property.

+ References

No definition available.

+ Details

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Data Type:	num:areaItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount of rent expense incurred for leased assets, including but not limited to, furniture and equipment, that is not directly or indirectly associated with the manufacture, sale or creation of a product or product line.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The amount of expense provided in the period for legal costs incurred on or before the balance sheet date pertaining to resolved, pending or threatened litigation, including arbitration and mediation proceedings.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.3)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

+ Details

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

- Definition

Term of the lessee's leasing arrangement renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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

- Definition

Term of the lessee's leasing arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	us-gaap_LesseeLeasingArrangementsOperatingLeasesTermOfContract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of loss contingency liability.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The amount of loss pertaining to the specified contingency that was charged against earnings in the period, including the effects of revisions in previously reported estimates.

+ References

+ Details

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

- Definition

Number of pending claims pertaining to a loss contingency.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14435-108349

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
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

No definition available.

+ Details

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

- Definition

Amount of cash outflow for the allowance granted to lessee and/or direct costs incurred by lessor used to prepare the leased premises for tenant's occupancy.

+ References

No definition available.

+ Details

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

- Details

Name:	us-gaap_LitigationCaseAxis=resn_InreResonantInc.SecuritiesLitigationCaseNumber15cv01970SJOMember
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Data Type:	na
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Period Type:

- Details

Name:	us-gaap_LitigationStatusAxis=us-gaap_PendingLitigationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_OfficeBuildingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=resn_SatelliteDevelopmentOfficeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_SupportEquipmentAndFacilitiesMember
Namespace Prefix:
Data Type:	na
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Period Type:

COMMITMENTS AND CONTINGENCIES (Details)					1 Months Ended				3 Months Ended		9 Months Ended
COMMITMENTS AND CONTINGENCIES (Details)	Aug. 01, 2017 USD ($)	Apr. 01, 2017 USD ($) ft²	Dec. 16, 2016 USD ($) ft²	Aug. 01, 2014 USD ($)	May 30, 2015 USD ($)	Apr. 30, 2014 USD ($)	Nov. 30, 2013 USD ($)	Oct. 31, 2013 USD ($)	Sep. 30, 2017 USD ($)	Sep. 30, 2016 USD ($)	Sep. 30, 2017 USD ($)	Sep. 30, 2016 USD ($)	Mar. 17, 2015 claims
Operating Leases
Legal expenses incurred											$ 750,000
Loss contingency accrual									$ 0	$ 0	0	$ 0
Loss in period											0	0
In re Resonant Inc. Securities Litigation, Case Number 15cv01970SJO (VBKx) \| Pending Litigation
Operating Leases
Punitive class action lawsuits filed \| claims													3
Corporate Headquarters
Operating Leases
Term of lease								38 months
Monthly rental payments	$ 13,987	$ 14,479		$ 8,286				$ 5,412
Increase in rental payments (as a percent)								3.00%
Period after which monthly rental increases								14 months
Monthly operating cost		$ 7,000		$ 3,154				$ 2,101
Renewal term of the lease						3 years
Tenant improvement allowance						$ 72,160
Additional tenant improvement allowance						$ 38,320
Area of real estate property \| ft²		9,024
Satellite development office
Operating Leases
Term of lease							2 years
Monthly rental payments			$ 17,000
Renewal term of the lease			5 years		1 year
Area of real estate property \| ft²			5,248
Rent expense					$ 5,000		$ 4,000
Facilities and equipment
Operating Leases
Rent expense									$ 127,000	$ 57,000	$ 339,000	$ 152,000