Defined benefit contribution vesting period

No definition available.

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Namespace Prefix:	actg_
Data Type:	xbrli:durationItemType
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- Definition

Defined Contribution Plan, Employer Matching Contribution, Per Cent Addition of Employees' Gross Pay

+ References

No definition available.

+ Details

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

- Definition

Amount of administration expense of defined benefit plan which decreases plan assets. Excludes plan administration expense paid by employer.

+ References

No definition available.

+ Details

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

- Definition

Amount of cost for defined contribution plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 70
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=49170846&loc=d3e28014-114942

+ Details

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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

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Data Type:	xbrli:stringItemType
Balance Type:	na
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- Definition

Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Details

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Namespace Prefix:
Data Type:	na
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- Details

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Namespace Prefix:
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Period Type:

RETIREMENT SAVINGS PLAN AND EXECUTIVE SEVERANCE POLICY - Narrative (Details) - USD ($)	3 Months Ended	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2021	Dec. 31, 2020
Defined Contribution Plan Disclosure [Line Items]
Contribution to retirement plan		$ 0	$ 0
Percent of employees' pay to match contribution	1.00%
Defined contribution plan, employer matching contribution, per cent addition of employees' gross pay	$ 0.50
Defined benefit plan, plan assets, administration expense		$ 332,000	$ 304,000
Printronix
Defined Contribution Plan Disclosure [Line Items]
Contribution to retirement plan	$ 9,000
Percent of employees' pay to match contribution	1.00%
Defined benefit contribution vesting period	4 years
Printronix \| Foreign Plan
Defined Contribution Plan Disclosure [Line Items]
Contribution to retirement plan	$ 189,000