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7. Stockholders' Equity (Details Narrative) - USD ($) $ in Thousands | Aug. 05, 2019 | Feb. 28, 2018
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Stock Repurchase Program [Member] |  |
Value of shares authorized for repurchase | $ 10,000,000 | $ 20,000,000

X
- Definition Amount remaining of a stock repurchase plan authorized. + References No definition available. + Details
Name: | us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Details
Name: | us-gaap_ShareRepurchaseProgramAxis=ACTG_StockRepurchaseProgramMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |