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17. Series A Warrants (Details Narrative) - USD ($) $ / shares in Units, $ in Thousands | 11 Months Ended | 12 Months Ended
--- | --- | ---
Nov. 18, 2019 | Dec. 31, 2019
Warrants [Member] |  |
Warrants exercised |  | 0
Starboard [Member] |  |
Warrants issued, shares | 5,000,000 |
Starboard [Member] | Warrants [Member] |  |
Warrants issued, shares | 5,000,000 |
Conversion price | $ 3.65 |
Fair value of warrants | $ 4,800 | $ 3,600

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- Definition Warrants exercised + References No definition available. + Details
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Namespace Prefix: | ACTG_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

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- Definition Warrants issued, shares + References No definition available. + Details
Name: | ACTG_WarrantsIssuedShares
Namespace Prefix: | ACTG_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

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- Definition The price per share of the conversion feature embedded in the debt instrument. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 5 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109500613&loc=SL6031898-161870 + Details
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Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

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- Definition Value of outstanding derivative securities that permit the holder the right to purchase securities (usually equity) from the issuer at a specified price. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(i)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |