License, Settlement and Release Agreements	12 Months Ended
Dec. 31, 2017
License Settlement And Release Agreement [Abstract]
License, Settlement and Release Agreements	LICENSE, SETTLEMENT AND RELEASE AGREEMENTS Subsequent to December 31, 2017, the Company, including its wholly-owned subsidiary, Finjan, Inc. (“Finjan” and collectively with the Company and its affiliated companies, the “Finjan Parties”), announced on March 1, 2018, that Finjan Parties and Symantec Corporation (“Symantec”) and its subsidiary, Blue Coat Systems, LLC (“Blue Coat”) (collectively, the “Symantec Parties”) entered into a Confidential Patent License and Settlement Agreement (the “License and Settlement Agreement”) effective as of February 28, 2018 (the "Effective Date"). Specifically, the Parties have resolved and settled all claims between them. As part of the settlement, the Symantec Parties will obtain a license to, among others, the Finjan patents and pay the Finjan Parties $65.0 million in cash within twenty (20) days of the Effective Date of the License and Settlement Agreement. Further, if Symantec of acquires certain entities within four years from the Effective Date, the Symantec Parties will pay additional license fees of up to $45.0 million to the Finjan Parties, unless otherwise mutually agreed to by the Company and Symantec. The remaining terms of the License and Settlement Agreement are confidential. On December 29, 2017, Finjan entered into a Confidential Patent License and Settlement Agreement (the “Finjan License”) with FireEye, Inc. whereby the companies resolved all pending litigation matters and together with a contemporaneous license agreement from FireEye to Finjan and its affiliates (the “FireEye License” and collectively with the Finjan License, the “Agreements”), the parties granted each other cross-licenses going forward. Under the terms of the Finjan License, FireEye agreed to pay Finjan $17.5 million in license fees, as follows: (a) $12.5 million on the Effective Date of the Finjan License, which amount was paid on December 29, 2017 and recognized as revenues as of December 31, 2017, in accordance with the Company’s revenue recognition policy as described in Note 2, and (b) $5.0 million which was offset by $5 million in license fees from Finjan to FireEye under the FireEye License, granting a perpetual license for the use of FireEye's patents. The FireEye License was determined not to be an intangible asset since it had no defined future benefit. Therefore, the FireEye License was expensed under SG&A. On April 21, 2017, the Company entered into a Confidential Patent License Agreement (the “EU Agreement”) with a European corporation (“EU Licensee”). Pursuant to the EU Agreement, EU Licensee obtained a license to our patent portfolio and agreed to pay Finjan $4.9 million cash, in license fees, paid as follows, (i) $2.3 million to be paid within 10 days after the effective date of the April 2017 Agreement, (ii) $1.3 million on or before January 31, 2018, and (iii) $1.3 million on or before January 31, 2019. The Company recognized $2.3 million of the $4.9 million license as revenues as of June 30, 2017, in accordance with the Company’s revenue recognition policy as described in Note 2. The second installment of $1.3 million was received on February 1, 2018 and recognized as revenues as of December 31, 2017, in accordance with the Company’s revenue recognition policy as described in Note 2. Such license does not grant EU Licensee any right to transfer, sublicense or grant any rights under the EU Agreement to a third party except as specifically provided under the EU Agreement. Such license also has certain provisions relating to certain unlicensed products of any company that acquires EU Licensee, or is acquired by EU Licensee or its affiliates, in which case additional license fees may apply. The specific terms of the EU Agreement are confidential. On March 30, 2017, Finjan entered into a Confidential Master Agreement (the “Master Agreement”) with Sophos Group plc, a public limited company organized and existing under the laws of England and Wales, Sophos Limited, a corporation organized and existing under the laws of England and Wales (“Sophos Limited”), and Sophos Inc. (“Sophos Inc.”), a Massachusetts corporation (collectively, “Sophos”). Pursuant to the Master Agreement, Finjan and Sophos Inc. agreed to dismiss the suit Finjan, Inc. v. Sophos, Inc. before the United States District Court of the Northern District of California (case no. 3:14cv1197-WHO) with prejudice. The Master Agreement also provides for full releases by the parties and covenants not to sue. Under the terms of the Sophos Agreement, on March 30, 2017, Sophos obtained a fully paid up license to the Finjan patent portfolio and agreed to pay a license fee of $15.0 million in cash, which Finjan received on March 31, 2017. The Company recognized $15.0 million as revenues as of March 31, 2017, in accordance with the Company’s revenue recognition policy as described in Note 2. Finally, in connection with the Sophos Agreement, on March 30, 2017, Finjan Mobile entered into a Confidential Patent Cross License Agreement (the “Finjan Mobile Cross License Agreement”) with Sophos Limited. Pursuant to the terms of the Finjan Mobile Cross License Agreement, the parties granted patent cross licenses in the Field of Use and Sophos Limited agreed to pay Finjan Mobile $2.5 million cash, $1.25 million on or before March 31, 2018, and $1.25 million on or before March 31, 2019, of which $1.25 million was recognized as revenues as of December 31, 2017, in accordance with the Company's revenue recognition policy as described in Note 2 of our consolidated financial statements. On March 24, 2017, Finjan entered into a Patent License, Settlement and Release Agreement (the "Avast Agreement") with Avast Software s.r.o., a company organized under the laws of the Czech Republic ("Avast"), which provided that upon Avast's satisfaction of certain terms, Finjan would dismiss its breach of contract and patent infringement claims, filed in the U.S. District Court for the Northern District of California (Case No. 3:17-cv-00283-BLF), against Avast and its newly acquired subsidiary, AVG Technologies, with prejudice. Under the terms of the Avast Agreement, Avast agreed to pay Finjan $7.745 million in cash on or before March 24, 2017. Payment was received on March 24, 2017 and was recorded as revenue in the first quarter of 2017, in accordance with the Company's revenue recognition policy, as described in Note 2. As provided in the Avast Agreement, specific terms of the agreement are confidential. On March 2, 2017, Finjan entered into a Confidential Patent License Agreement (the “Veracode Agreement”) with Veracode, Inc., a Delaware corporation (“Veracode”). Pursuant to the Veracode Agreement, Veracode obtained a license to the Finjan patent portfolio and agreed to pay a license fee of $2.0 million in cash, which Finjan received on March 2, 2017 and was recorded as revenue in the first quarter of 2017, in accordance with the Company's revenue recognition policy, as described in Note 2. Such license does not grant Veracode any right to transfer, sublicense or grant any rights under the Veracode Agreement to a third party except as specifically provided under the Veracode Agreement. Such license also has certain provisions relating to certain unlicensed products of any company that acquires Veracode, or is acquired by Veracode or its affiliates, in which case additional license fees may apply. The specific terms of the Veracode Agreement are confidential. On December 28, 2016, Finjan entered into a Confidential Patent License Agreement (the “December 2016 License”) with F5 Networks, Inc. (“F5”). The December 2016 License provides for F5 to pay a license fee of $4.0 million in cash, which Finjan received on December 30, 2016. Finjan recognized all of the $4.0 million license as revenue as of December 31, 2016, as such amount was determined to be fixed and determinable, in accordance with the Company’s revenue recognition policy as described in Note 2. In exchange for the foregoing and other valuable consideration, Finjan agreed to, subject to certain restrictions, limits and other conditions, grant F5 a nonexclusive, irrevocable (except in the case of non-payment by F5), worldwide paid-up license under Finjan’s patents as specified in the December 2016 License. On June 30, 2016, Finjan entered into a Confidential Patent License Agreement (the “June 30, 2016 License”) with a European cloud-based network security firm (the “2016 European Licensee”). The June 30, 2016 License provides for the 2016 European Licensee to pay Finjan $565,000 in cash, which was paid on or about the time of execution of the June 30, 2016 License. Finjan recognized all of the $565,000 license as revenue as of December 31, 2016, as such amount was determined to be fixed and determinable, in accordance with the Company’s revenue recognition policy as described in Note 2. In exchange for the foregoing and other valuable consideration, Finjan agreed to, subject to certain restrictions, limits and other conditions, grant the 2016 European Licensee a nonexclusive, term license in the United States under Finjan’s U.S. patents as specified in the June 30, 2016 License. On June 3, 2016, Finjan entered into a Confidential Patent License, Settlement and Release Agreement (“June 3, 2016 License”) with Proofpoint, Inc. (“Proofpoint”). As part of the June 3, 2016 License, Case No. 3:15-cv-5808-HSG, entitled Finjan, Inc. v. Proofpoint, Inc. and Armorize Technologies, Inc., pending before the Honorable Haywood S. Gilliam, Jr. in the U.S. District Court for the Northern District of California, was dismissed with prejudice on June 7, 2016. The June 3, 2016 License provides for Proofpoint to pay Finjan the sum of $10.9 million in cash, in which $4.3 million was received on June 6, 2016, $3.3 million was received in December 28, 2016, and $3.3 million was received on December 29, 2017. The Company recognized $7.6 million of the $10.9 million license as revenues as of December 31, 2016, as such amount was determined to be fixed and determinable, in accordance with the Company’s revenue recognition policy as described in Note 2. The Company recognized $3.3 million under the terms of the June 3, 2016 License as revenues as of December 31, 2017, in accordance with the Company's revenue recognition policy as described in Note 2. In exchange for the foregoing and other valuable consideration, Finjan agreed to, subject to certain restrictions, limits and other conditions, grant Proofpoint a worldwide, non-royalty bearing, fully paid-up (as of the final payment), nonexclusive, perpetual, irrevocable (except in the case of non-payment by Proofpoint or other material breach) license under Finjan’s patents as specified in the June 3, 2016 License. Certain portions of the June 3, 2016 License are subject to Confidential Treatment pursuant to a Confidential Treatment request filed with the Securities and Exchange Commission (“SEC”) on August 8, 2016 and Confidential Treatment Order granted by the SEC on September 26, 2016. On December 30, 2015, Finjan entered into a Confidential Patent License, Settlement and Release Agreement (“December 30, 2015 License”), effective December 29, 2015, with a United States-based third party (“Licensee”). The December 30, 2015 License provides for Licensee to pay Finjan the sum of $3.65 million in cash, in which $1.0 million was received on December 30, 2015, $1.65 million was received on June 27, 2016, and $1.0 million was received on September 1, 2016. The Company recognized $1.0 million of the $3.65 million license as revenues as of December 31, 2015. The remaining balance of $2.65 million under the terms of the December 30, 2015 License was recognized as revenues as of December 31, 2016. In exchange for the foregoing and other valuable consideration, Finjan agreed to, subject to certain restrictions, limits and other conditions, grant Licensee a non-exclusive, irrevocable (except in the case of non-payment by Licensee or other material breach), worldwide license under Finjan Patents during the Term as specified in the December 30, 2015 License. On April 7, 2015, Finjan entered into a Confidential Asset Purchase and Patent License Agreement (the “April 7, 2015 License”), effective as of April 7, 2015, with F-Secure Corporation, a company incorporated in Finland (“F-Secure”). The April 7, 2015 License provides for F-Secure to pay Finjan the sum of $1.0 million in cash, of which $700,000 was received on April 22, 2015 and $300,000 received on March 31, 2016. The Company recognized $700,000 of the $1.0 million license as revenues as of September 30, 2015, as such amount was determined to be fixed and determinable, in accordance with the Company’s revenue recognition policy as described in Note 2. The remaining balance of $300,000 under the terms of the April 7, 2015 License, was recognized as revenues as of March 31, 2016. Finjan agreed to, subject to certain restrictions, limits and other conditions, grant F-Secure a worldwide, fully-paid, non-exclusive field of use license to Finjan patents owned as of the effective date or acquired by Finjan or its affiliates within two years from the effective date, as well as to the F-Secure Patents. On September 24, 2014, Finjan entered into a Confidential Patent License, Settlement and Release Agreement (the “September 24, 2014 License”) with Websense, Inc. (“Websense”) against whom Finjan had filed a patent infringement lawsuit. Pursuant to this September 24, 2014 License, Websense and Finjan also agreed to dismiss the infringement litigation, and each party gave the other a general release for all claims that it might have against the other, known or unknown, based on the actions of either party on or before the date of the settlement. Under the September 24, 2014 License, Websense paid Finjan a license fee of $8.0 million payable in four installments. $3.0 million was received on execution of the agreement, $2.0 million was received on January 16, 2015, $2.0 million was received on January 14, 2016 and $1.0 million was received on January 13, 2017 and recognized as revenues in accordance with the Company's revenue recognition policy as described in Note 2.

LICENSE, SETTLEMENT AND RELEASE AGREEMENTS

Subsequent to December 31, 2017, the Company, including its wholly-owned subsidiary, Finjan, Inc. (“Finjan” and collectively with the Company and its affiliated companies, the “Finjan Parties”), announced on March 1, 2018, that Finjan Parties and Symantec Corporation (“Symantec”) and its subsidiary, Blue Coat Systems, LLC (“Blue Coat”) (collectively, the “Symantec Parties”) entered into a Confidential Patent License and Settlement Agreement (the “License and Settlement Agreement”) effective as of February 28, 2018 (the "Effective Date"). Specifically, the Parties have resolved and settled all claims between them. As part of the settlement, the Symantec Parties will obtain a license to, among others, the Finjan patents and pay the Finjan Parties $65.0 million in cash within twenty (20) days of the Effective Date of the License and Settlement Agreement. Further, if Symantec of acquires certain entities within four years from the Effective Date, the Symantec Parties will pay additional license fees of up to $45.0 million to the Finjan Parties, unless otherwise mutually agreed to by the Company and Symantec. The remaining terms of the License and Settlement Agreement are confidential.

On December 29, 2017, Finjan entered into a Confidential Patent License and Settlement Agreement (the “Finjan License”) with FireEye, Inc. whereby the companies resolved all pending litigation matters and together with a contemporaneous license agreement from FireEye to Finjan and its affiliates (the “FireEye License” and collectively with the Finjan License, the “Agreements”), the parties granted each other cross-licenses going forward. Under the terms of the Finjan License, FireEye agreed to pay Finjan $17.5 million in license fees, as follows: (a) $12.5 million on the Effective Date of the Finjan License, which amount was paid on December 29, 2017 and recognized as revenues as of December 31, 2017, in accordance with the Company’s revenue recognition policy as described in Note 2, and (b) $5.0 million which was offset by $5 million in license fees from Finjan to FireEye under the FireEye License, granting a perpetual license for the use of FireEye's patents. The FireEye License was determined not to be an intangible asset since it had no defined future benefit. Therefore, the FireEye License was expensed under SG&A.

On April 21, 2017, the Company entered into a Confidential Patent License Agreement (the “EU Agreement”) with a European corporation (“EU Licensee”). Pursuant to the EU Agreement, EU Licensee obtained a license to our patent portfolio and agreed to pay Finjan $4.9 million cash, in license fees, paid as follows, (i) $2.3 million to be paid within 10 days after the effective date of the April 2017 Agreement, (ii) $1.3 million on or before January 31, 2018, and (iii) $1.3 million on or before January 31, 2019. The Company recognized $2.3 million of the $4.9 million license as revenues as of June 30, 2017, in accordance with the Company’s revenue recognition policy as described in Note 2. The second installment of $1.3 million was received on February 1, 2018 and recognized as revenues as of December 31, 2017, in accordance with the Company’s revenue recognition policy as described in Note 2. Such license does not grant EU Licensee any right to transfer, sublicense or grant any rights under the EU Agreement to a third party except as specifically provided under the EU Agreement. Such license also has certain provisions relating to certain unlicensed products of any company that acquires EU Licensee, or is acquired by EU Licensee or its affiliates, in which case additional license fees may apply. The specific terms of the EU Agreement are confidential.

On March 30, 2017, Finjan entered into a Confidential Master Agreement (the “Master Agreement”) with Sophos Group plc, a public limited company organized and existing under the laws of England and Wales, Sophos Limited, a corporation organized and existing under the laws of England and Wales (“Sophos Limited”), and Sophos Inc. (“Sophos Inc.”), a Massachusetts corporation (collectively, “Sophos”). Pursuant to the Master Agreement, Finjan and Sophos Inc. agreed to dismiss the suit Finjan, Inc. v. Sophos, Inc. before the United States District Court of the Northern District of California (case no. 3:14cv1197-WHO) with prejudice. The Master Agreement also provides for full releases by the parties and covenants not to sue. Under the terms of the Sophos Agreement, on March 30, 2017, Sophos obtained a fully paid up license to the Finjan patent portfolio and agreed to pay a license fee of $15.0 million in cash, which Finjan received on March 31, 2017. The Company recognized $15.0 million as revenues as of March 31, 2017, in accordance with the Company’s revenue recognition policy as described in Note 2. Finally, in connection with the Sophos Agreement, on March 30, 2017, Finjan Mobile entered into a Confidential Patent Cross License Agreement (the “Finjan Mobile Cross License Agreement”) with Sophos Limited. Pursuant to the terms of the Finjan Mobile Cross License Agreement, the parties granted patent cross licenses in the Field of Use and Sophos Limited agreed to pay Finjan Mobile $2.5 million cash, $1.25 million on or before March 31, 2018, and $1.25 million on or before March 31, 2019, of which $1.25 million was recognized as revenues as of December 31, 2017, in accordance with the Company's revenue recognition policy as described in Note 2 of our consolidated financial statements.

On March 24, 2017, Finjan entered into a Patent License, Settlement and Release Agreement (the "Avast Agreement") with Avast Software s.r.o., a company organized under the laws of the Czech Republic ("Avast"), which provided that upon Avast's satisfaction of certain terms, Finjan would dismiss its breach of contract and patent infringement claims, filed in the U.S. District Court for the Northern District of California (Case No. 3:17-cv-00283-BLF), against Avast and its newly acquired subsidiary, AVG Technologies, with prejudice. Under the terms of the Avast Agreement, Avast agreed to pay Finjan $7.745 million in cash on or before March 24, 2017. Payment was received on March 24, 2017 and was recorded as revenue in the first quarter of 2017, in accordance with the Company's revenue recognition policy, as described in Note 2. As provided in the Avast Agreement, specific terms of the agreement are confidential.

On March 2, 2017, Finjan entered into a Confidential Patent License Agreement (the “Veracode Agreement”) with Veracode, Inc., a Delaware corporation (“Veracode”). Pursuant to the Veracode Agreement, Veracode obtained a license to the Finjan patent portfolio and agreed to pay a license fee of $2.0 million in cash, which Finjan received on March 2, 2017 and was recorded as revenue in the first quarter of 2017, in accordance with the Company's revenue recognition policy, as described in Note 2. Such license does not grant Veracode any right to transfer, sublicense or grant any rights under the Veracode Agreement to a third party except as specifically provided under the Veracode Agreement. Such license also has certain provisions relating to certain unlicensed products of any company that acquires Veracode, or is acquired by Veracode or its affiliates, in which case additional license fees may apply. The specific terms of the Veracode Agreement are confidential.

On December 28, 2016, Finjan entered into a Confidential Patent License Agreement (the “December 2016 License”) with F5 Networks, Inc. (“F5”). The December 2016 License provides for F5 to pay a license fee of $4.0 million in cash, which Finjan received on December 30, 2016. Finjan recognized all of the $4.0 million license as revenue as of December 31, 2016, as such amount was determined to be fixed and determinable, in accordance with the Company’s revenue recognition policy as described in Note 2. In exchange for the foregoing and other valuable consideration, Finjan agreed to, subject to certain restrictions, limits and other conditions, grant F5 a nonexclusive, irrevocable (except in the case of non-payment by F5), worldwide paid-up license under Finjan’s patents as specified in the December 2016 License.

On June 30, 2016, Finjan entered into a Confidential Patent License Agreement (the “June 30, 2016 License”) with a European cloud-based network security firm (the “2016 European Licensee”). The June 30, 2016 License provides for the 2016 European Licensee to pay Finjan $565,000 in cash, which was paid on or about the time of execution of the June 30, 2016 License. Finjan recognized all of the $565,000 license as revenue as of December 31, 2016, as such amount was determined to be fixed and determinable, in accordance with the Company’s revenue recognition policy as described in Note 2. In exchange for the foregoing and other valuable consideration, Finjan agreed to, subject to certain restrictions, limits and other conditions, grant the 2016 European Licensee a nonexclusive, term license in the United States under Finjan’s U.S. patents as specified in the June 30, 2016 License.

On June 3, 2016, Finjan entered into a Confidential Patent License, Settlement and Release Agreement (“June 3, 2016 License”) with Proofpoint, Inc. (“Proofpoint”). As part of the June 3, 2016 License, Case No. 3:15-cv-5808-HSG, entitled Finjan, Inc. v. Proofpoint, Inc. and Armorize Technologies, Inc., pending before the Honorable Haywood S. Gilliam, Jr. in the U.S. District Court for the Northern District of California, was dismissed with prejudice on June 7, 2016. The June 3, 2016 License provides for Proofpoint to pay Finjan the sum of $10.9 million in cash, in which $4.3 million was received on June 6, 2016, $3.3 million was received in December 28, 2016, and $3.3 million was received on December 29, 2017. The Company recognized $7.6 million of the $10.9 million license as revenues as of December 31, 2016, as such amount was determined to be fixed and determinable, in accordance with the Company’s revenue recognition policy as described in Note 2. The Company recognized $3.3 million under the terms of the June 3, 2016 License as revenues as of December 31, 2017, in accordance with the Company's revenue recognition policy as described in Note 2. In exchange for the foregoing and other valuable consideration, Finjan agreed to, subject to certain restrictions, limits and other conditions, grant Proofpoint a worldwide, non-royalty bearing, fully paid-up (as of the final payment), nonexclusive, perpetual, irrevocable (except in the case of non-payment by Proofpoint or other material breach) license under Finjan’s patents as specified in the June 3, 2016 License. Certain portions of the June 3, 2016 License are subject to Confidential Treatment pursuant to a Confidential Treatment request filed with the Securities and Exchange Commission (“SEC”) on August 8, 2016 and Confidential Treatment Order granted by the SEC on September 26, 2016.

On December 30, 2015, Finjan entered into a Confidential Patent License, Settlement and Release Agreement (“December 30, 2015 License”), effective December 29, 2015, with a United States-based third party (“Licensee”). The December 30, 2015 License provides for Licensee to pay Finjan the sum of $3.65 million in cash, in which $1.0 million was received on December 30, 2015, $1.65 million was received on June 27, 2016, and $1.0 million was received on September 1, 2016. The Company recognized $1.0 million of the $3.65 million license as revenues as of December 31, 2015. The remaining balance of $2.65 million under the terms of the December 30, 2015 License was recognized as revenues as of December 31, 2016. In exchange for the foregoing and other valuable consideration, Finjan agreed to, subject to certain restrictions, limits and other conditions, grant Licensee a non-exclusive, irrevocable (except in the case of non-payment by Licensee or other material breach), worldwide license under Finjan Patents during the Term as specified in the December 30, 2015 License.

On April 7, 2015, Finjan entered into a Confidential Asset Purchase and Patent License Agreement (the “April 7, 2015 License”), effective as of April 7, 2015, with F-Secure Corporation, a company incorporated in Finland (“F-Secure”). The April 7, 2015 License provides for F-Secure to pay Finjan the sum of $1.0 million in cash, of which $700,000 was received on April 22, 2015 and $300,000 received on March 31, 2016. The Company recognized $700,000 of the $1.0 million license as revenues as of September 30, 2015, as such amount was determined to be fixed and determinable, in accordance with the Company’s revenue recognition policy as described in Note 2. The remaining balance of $300,000 under the terms of the April 7, 2015 License, was recognized as revenues as of March 31, 2016. Finjan agreed to, subject to certain restrictions, limits and other conditions, grant F-Secure a worldwide, fully-paid, non-exclusive field of use license to Finjan patents owned as of the effective date or acquired by Finjan or its affiliates within two years from the effective date, as well as to the F-Secure Patents.

On September 24, 2014, Finjan entered into a Confidential Patent License, Settlement and Release Agreement (the “September 24, 2014 License”) with Websense, Inc. (“Websense”) against whom Finjan had filed a patent infringement lawsuit. Pursuant to this September 24, 2014 License, Websense and Finjan also agreed to dismiss the infringement litigation, and each party gave the other a general release for all claims that it might have against the other, known or unknown, based on the actions of either party on or before the date of the settlement. Under the September 24, 2014 License, Websense paid Finjan a license fee of $8.0 million payable in four installments. $3.0 million was received on execution of the agreement, $2.0 million was received on January 16, 2015, $2.0 million was received on January 14, 2016 and $1.0 million was received on January 13, 2017 and recognized as revenues in accordance with the Company's revenue recognition policy as described in Note 2.