DESCRIPTION OF BUSINESS	9 Months Ended
DESCRIPTION OF BUSINESS	Sep. 30, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]
DESCRIPTION OF BUSINESS	DESCRIPTION OF BUSINESS Acacia Research Corporation (the “Company,” “Acacia,” “we,” “us,” or “our”) is an opportunistic capital platform that purchases businesses based on the differentials between public and private market valuations. We use a wide range of transactional and operational capabilities to realize the intrinsic value in the businesses that we acquire. Our ideal transactions include the acquisition of public or private companies, the acquisition of divisions of other companies, or structured transactions that can result in the recapitalization or restructuring of the ownership of a business to enhance value. Our focus is companies with market values in the sub-$2 billion range and particularly on businesses valued at $1 billion or less. We are, however, opportunistic, and may pursue acquisitions that are larger under the right circumstance. We operate our business based on three key principles of People, Process and Performance and have built a management team with demonstrated expertise in Research, Transactions and Execution, and Operations and Management of our targeted acquisitions. We utilized these skill sets and resources to acquire a portfolio of equity securities of public and private life science businesses, or the “Life Sciences Portfolio,” in June 2020. As of September 30, 2023, we have monetized a majority of the portfolio while retaining an interest in a number of operating businesses, including a controlling interest in one of the companies in the portfolio. Further, some of the businesses in which we continue to hold an interest generate income through the receipt of royalties. Refer to Note 3 for additional information. Relationship with Starboard Value, LP Our strategic relationship with Starboard Value, LP (“Starboard”), the Company's majority shareholder, provides us access to industry expertise, and operating partners and industry experts to evaluate potential acquisition opportunities and enhance the oversight and value creation of such businesses once acquired. Starboard has provided, and we expect will continue to provide, ready access to its extensive network of industry executives and, as part of our relationship, Starboard has assisted, and we expect will continue to assist, with sourcing and evaluating appropriate acquisition opportunities. Recapitalization On October 30, 2022, the Company entered into a Recapitalization Agreement (the “Recapitalization Agreement”) with Starboard and certain funds and accounts affiliated with, or managed by, Starboard (collectively, the “Investors”), pursuant to which, among other things, the Company and Starboard agreed to enter into a series of transactions (the “Recapitalization”) to restructure Starboard’s existing investments in the Company in order to simplify the Company’s capital structure. Under the Recapitalization Agreement, the Company and Starboard agreed to take certain actions in connection with the Recapitalization, including submitting a proposal for stockholder approval to remove the “4.89% blocker” provision contained in the Company’s Amended and Restated Certificate of Designations, Preferences and Rights of Series A Convertible Preferred Stock (the “Amended and Restated Certificate of Designations”). The Company’s stockholders approved the Second Amended and Restated Certificate of Designations (the “Second Amended and Restated Certificate of Designations”) at the Company’s annual meeting of stockholders held on May 16, 2023 which became effective on June 30, 2023. Subsequently, and in accordance with the terms contained in the Second Amended and Restated Certificate of Designations and the Recapitalization Agreement, on July 13, 2023, Starboard converted an aggregate amount of 350,000 shares of Series A Convertible Preferred Stock of the Company, par value $0.001 per share (the “Series A Redeemable Convertible Preferred Stock”) into 9,616,746 shares of common stock, which included 27,704 shares of common stock issued in respect of accrued and unpaid dividends (the “Preferred Stock Conversion”). Further to the terms of the Recapitalization Agreement and in accordance with the terms of the Company’s Series B Warrants (the “Series B Warrants”), on July 13, 2023, Starboard also exercised 31,506,849 of the Series B Warrants through a combination of a “Note Cancellation” and a “Limited Cash Exercise” (each as defined in the Series B Warrants), resulting in the receipt by Starboard of 31,506,849 shares of common stock (the “Series B Warrants Exercise” and, together with the Preferred Stock Conversion, the “Recapitalization Transactions”), the cancellation of $60.0 million aggregate principal amount of the Company’s senior secured notes held by Starboard (as described further in Note 8, the “Senior Secured Notes”) and the receipt by the Company of aggregate gross proceeds of approximately $55.0 million. As a result of the Recapitalization Transactions, Starboard beneficially owned 61,123,595 shares of common stock as of July 13, 2023, representing approximately 61.2% of the common stock based on 99,886,322 shares of common stock issued and outstanding as of such date. No shares of Series A Redeemable Convertible Preferred Stock, no Series B Warrants, nor any Senior Secured Notes remain outstanding. Refer to Note 8 for a detailed description of the Recapitalization and the Recapitalization Transactions. Intellectual Property Operations – Patent Licensing, Enforcement and Technologies Business The Company through its Patent Licensing, Enforcement and Technologies Business invests in intellectual property and related absolute return assets and engages in the licensing and enforcement of patented technologies. Through our Patent Licensing, Enforcement and Technologies Business, operated under our wholly owned subsidiary Acacia Research Group, LLC, and its wholly-owned subsidiaries (collectively “ARG”), we are a principal in the licensing and enforcement of patent portfolios, with our operating subsidiaries obtaining the rights in the patent portfolio or purchasing the patent portfolio outright. While we, from time to time, partner with inventors and patent owners, from small entities to large corporations, we assume all responsibility for advancing operational expenses while pursuing a patent licensing and enforcement program. When applicable, we share net licensing revenue with our patent partners as that program matures, on a pre-arranged and negotiated basis. We may also provide upfront capital to patent owners as an advance against future licensing revenue. Currently, on a consolidated basis, our operating subsidiaries own or control the rights to multiple patent portfolios, which include U.S. patents and certain foreign counterparts, covering technologies used in a variety of industries. ARG generates revenues and related cash flows from the granting of IP rights for the use of patented technologies that its operating subsidiaries control or own. Our Patent Licensing, Enforcement and Technologies Business depends upon the identification and investment in new patents, inventions and companies that own IP through relationships with inventors, universities, research institutions, technology companies and others. If ARG’s operating subsidiaries are unable to maintain those relationships and identify and grow new relationships, then they may not be able to identify new technology-based opportunities for sustainable revenue and/or revenue growth. During the nine months ended September 30, 2023 and the year ended December 31, 2022, ARG did not obtain control of any new patent portfolios. Industrial Operations Acquisition On October 7, 2021, we consummated our first operating company acquisition of Printronix Holding Corporation and subsidiaries (“Printronix”). Printronix is a leading manufacturer and distributor of industrial impact printers, also known as line matrix printers, and related consumables and services. The Printronix business serves a diverse group of customers that operate across healthcare, food and beverage, manufacturing and logistics, and other sectors. This mature technology is known for its ability to operate in hazardous environments. Printronix has a manufacturing site located in Malaysia and third-party configuration sites located in the United States, Singapore and Holland, along with sales and support locations around the world to support its global network of users, channel partners and strategic alliances. This acquisition was made at what we believe to be an attractive purchase price, and we are now supporting existing management in its initiative to reduce costs and operate more efficiently and in its execution of strategic partnerships to generate growth. We acquired all of the outstanding stock of Printronix, for a cash purchase price of approximately $37.0 million, which included an initial $33.0 million cash payment and a $4.0 million working capital adjustment. The Company's consolidated financial statements include Printronix's consolidated operations.