Area of Office Space

No definition available.

Name:	actg_AreaOfOfficeSpace
Namespace Prefix:	actg_
Data Type:	dtr-types:areaItemType
Balance Type:	na
Period Type:	instant

- Definition

Lessee, Operating Lease, Number of Renewal Options

+ References

No definition available.

+ Details

Name:	actg_LesseeOperatingLeaseNumberOfRenewalOptions
Namespace Prefix:	actg_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Net Income For Settlement Offset By Contingency Accruals

+ References

No definition available.

+ Details

Name:	actg_NetIncomeForSettlementOffsetByContingencyAccruals
Namespace Prefix:	actg_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of any recovery from third parties that is credited to environmental remediation costs.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 410
-SubTopic 30
-Section 50
-Paragraph 12
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6393242&loc=d3e13296-110859

+ Details

Name:	us-gaap_EnvironmentalCostsRecognizedRecoveryCreditedToExpense
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.3)
-URI http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227

+ Details

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

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

- Definition

Remaining lease term of operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918673-209980

+ Details

Name:	us-gaap_LesseeOperatingLeaseRemainingLeaseTerm
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	instant

- Definition

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

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918673-209980

+ Details

Name:	us-gaap_LesseeOperatingLeaseRenewalTerm
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	instant

- Definition

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

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918673-209980

+ Details

Name:	us-gaap_LesseeOperatingLeaseTermOfContract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount of loss contingency liability.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=121557415&loc=d3e14326-108349

+ Details

Name:	us-gaap_LossContingencyAccrualAtCarryingValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The present value of the liability as of the balance sheet date representing required funding mandated by statute or regulatory authority that is related directly or indirectly to underwriting activities, including pools for self-insurance and excluding premium taxes and income taxes. The funds derived from the assessments generally enable a government guarantor to pay insurance claims in the event that the underwriting insurer is insolvent or otherwise unable to meet its payment obligations.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 405
-SubTopic 30
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6392405&loc=d3e24119-109301

+ Details

Name:	us-gaap_LossContingencyDiscountedAmountOfInsuranceRelatedAssessmentLiability
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of single lease cost, calculated by allocation of remaining cost of lease over remaining lease term. Includes, but is not limited to, single lease cost, after impairment of right-of-use asset, calculated by amortization of remaining right-of-use asset and accretion of lease liability.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 55
-Paragraph 53
-URI http://asc.fasb.org/extlink&oid=123414884&loc=SL77918982-209971

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918686-209980

+ Details

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

- Details

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

- Details

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

- Details

Name:	us-gaap_LossContingenciesByNatureOfContingencyAxis=us-gaap_SuretyBondMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

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

- Details

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

- Details

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

- Details

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

- Details

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

- Details

Name:	us-gaap_LeaseContractualTermAxis=actg_FirstAmendmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

Name:	us-gaap_LeaseContractualTermAxis=actg_Lease1Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LeaseContractualTermAxis=actg_Lease2Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

COMMITMENTS AND CONTINGENCIES - Narrative (Details)		3 Months Ended			6 Months Ended		12 Months Ended
COMMITMENTS AND CONTINGENCIES - Narrative (Details)	Dec. 29, 2019 numberOfRenewalOptions	Jun. 30, 2022 USD ($)	Dec. 31, 2021 USD ($)	Jun. 30, 2021 USD ($)	Jun. 30, 2022 USD ($)	Jun. 30, 2021 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Jun. 02, 2022 ft²	Apr. 01, 2021	Nov. 10, 2020 ft²	Nov. 01, 2020 ft²	Jan. 07, 2020 ft²	Nov. 28, 2019 ft²	Sep. 30, 2019 ft²	Jun. 07, 2019 ft²	Mar. 01, 2019
Lessee, Lease, Description [Line Items]
Operating lease cost \| $		$ 339,000		$ 152,000	$ 796,000	$ 302,000
Income from settlement \| $					0	$ 338,000	$ 1,200,000
Contingency accruals \| $		0	$ 0		0		0
Legal fees \| $			408,000		45,000
PPC Irvine Center Investment, LLC \| Printronix
Lessee, Lease, Description [Line Items]
Remaining lease term										65 months
Surety Bond
Lessee, Lease, Description [Line Items]
Bonds outstanding \| $		$ 100,000	$ 100,000		100,000		$ 100,000
Printronix
Lessee, Lease, Description [Line Items]
Environmental costs recovered \| $								$ 24,000
Legal fees \| $					$ 0
Printronix \| Dynamics Sing Sdn. Bhd
Lessee, Lease, Description [Line Items]
Remaining lease term	48 months
Printronix \| PF Grand Paris
Lessee, Lease, Description [Line Items]
Remaining lease term																	109 months
Printronix \| Shanghai SongYun Enterprise Management Center
Lessee, Lease, Description [Line Items]
Remaining lease term												48 months
Printronix \| HSBC Institutional Trust Services (Singapore) Limited
Lessee, Lease, Description [Line Items]
Remaining lease term									36 months
Building
Lessee, Lease, Description [Line Items]
Area of office space \| ft²													8,600			8,293
Term of lease													24 months			60 months
Building \| Printronix
Lessee, Lease, Description [Line Items]
Area of office space \| ft²													73,649
Building \| PPC Irvine Center Investment, LLC \| Printronix
Lessee, Lease, Description [Line Items]
Area of office space \| ft²											8,662
Building \| Printronix \| Dynamics Sing Sdn. Bhd
Lessee, Lease, Description [Line Items]
Area of office space \| ft²															52,000
Building \| Printronix \| PF Grand Paris
Lessee, Lease, Description [Line Items]
Area of office space \| ft²														3,045
Building \| Printronix \| Shanghai SongYun Enterprise Management Center
Lessee, Lease, Description [Line Items]
Area of office space \| ft²												2,422
Building \| Printronix \| HSBC Institutional Trust Services (Singapore) Limited
Lessee, Lease, Description [Line Items]
Area of office space \| ft²									4,560
Building \| First amendment
Lessee, Lease, Description [Line Items]
Term of lease													3 years
Manufacturing Facility \| Lease 1 \| Printronix \| Dynamics Sing Sdn. Bhd
Lessee, Lease, Description [Line Items]
Number of renewal options \| numberOfRenewalOptions	2
Renewal term of lease	4 years
Manufacturing Facility \| Lease 2 \| Printronix \| Dynamics Sing Sdn. Bhd
Lessee, Lease, Description [Line Items]
Number of renewal options \| numberOfRenewalOptions	1
Renewal term of lease	2 years