Warrants issued

No definition available.

Name:	ACTG_WarrantsIssued
Namespace Prefix:	ACTG_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

The price per share of the conversion feature embedded in the debt instrument.

+ References

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-Publisher FASB
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+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

Carrying value as of the balance sheet date of dividends declared but unpaid on equity securities issued by the entity and outstanding.

+ References

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+ Details

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

- Definition

Fair value as of the balance sheet date of the embedded derivative or group of embedded derivatives classified as a liability.

+ References

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-Publisher FASB
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+ Details

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

- Definition

Number of new stock issued during the period.

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+ Details

Name:	us-gaap_StockIssuedDuringPeriodSharesNewIssues
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_SecuritiesFinancingTransactionAxis=ACTG_SecuritiesPurchaseAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=ACTG_SeriesAWarrantsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_SecuritiesFinancingTransactionAxis=ACTG_SeriesARedeemableConvertibleStockMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

10. Series A Redeemable Convertible Preferred Stock (Details Narrative) - USD ($) $ / shares in Units, $ in Thousands	11 Months Ended
	Nov. 18, 2019	Mar. 31, 2020	Dec. 31, 2019
Fair value of Series A embedded derivative		$ 21,682	$ 17,974
Securities Purchase Agreement [Member] \| Starboard [Member]
Stock issued	350,000
Securities Purchase Agreement [Member] \| Starboard [Member] \| Series A Warrants [Member]
Warrants issued	5,000,000
Conversion price	$ 3.65
Series A Redeemable Convertible Preferred Stock [Member]
Accrued and unpaid dividends		0
Fair value of Series A embedded derivative		$ 21,700