Subsequent Events	12 Months Ended
Dec. 31, 2016
Subsequent Events [Abstract]
Subsequent Events	SUBSEQUENT EVENTS On March 2, 2017, Finjan, Inc., entered into a Confidential Patent License Agreement (the “March 2017 License Agreement”) with Veracode, Inc., a Delaware corporation (“Veracode”). Pursuant to the March 2017 License Agreement, Veracode will obtain a license to the Finjan patent portfolio and pay a license fee of $2.0 million in cash, which Finjan received on March 2, 2017. Such license does not grant Veracode any right to transfer, sublicense or grant any rights under the March 2017 License Agreement to a third party except as specifically provided under the March 2017 License 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 March 2017 License Agreement are confidential. On March 24, 2017, Finjan Holdings, Inc., announced that Finjan, Inc., its wholly-owned subsidiary and Avast Software s.r.o., a company organized under the laws of the Czech Republic ("Avast"), have reached an agreement (the "March 2017 Agreement") that upon Avast's satisfaction of certain terms, Finjan will 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 March 2017 Agreement, Avast is 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 3 of the Company's Financial Statements. As called for in the March 2017 Agreement, specific terms of the Agreement are confidential. The Company will redeem $3.9 million or 23,469 shares of the Series A Preferred stock in April 2017; $2.4 million reducing the original recorded value of the Series A Preferred stock and $1.5 million reducing the accreted value.

SUBSEQUENT EVENTS

On March 2, 2017, Finjan, Inc., entered into a Confidential Patent License Agreement (the “March 2017 License Agreement”) with Veracode, Inc., a Delaware corporation (“Veracode”). Pursuant to the March 2017 License Agreement, Veracode will obtain a license to the Finjan patent portfolio and pay a license fee of $2.0 million in cash, which Finjan received on March 2, 2017. Such license does not grant Veracode any right to transfer, sublicense or grant any rights under the March 2017 License Agreement to a third party except as specifically provided under the March 2017 License 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 March 2017 License Agreement are confidential.

On March 24, 2017, Finjan Holdings, Inc., announced that Finjan, Inc., its wholly-owned subsidiary and Avast Software s.r.o., a company organized under the laws of the Czech Republic ("Avast"), have reached an agreement (the "March 2017 Agreement") that upon Avast's satisfaction of certain terms, Finjan will 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 March 2017 Agreement, Avast is 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 3 of the Company's Financial Statements. As called for in the March 2017 Agreement, specific terms of the Agreement are confidential.

The Company will redeem $3.9 million or 23,469 shares of the Series A Preferred stock in April 2017; $2.4 million reducing the original recorded value of the Series A Preferred stock and $1.5 million reducing the accreted value.