Other Income	12 Months Ended
Dec. 31, 2015
Component of Operating Income [Abstract]
Other Income	OTHER INCOME GAIN ON SETTLEMENTS In July 2010, the Company filed a patent infringement lawsuit against five software technology companies (the “2010 Litigation”). The Company asserted that defendants had willfully infringed the Company’s U.S. patents and sought an injunction and damages for such infringement. In April 2012, a Memorandum of Understanding was signed between the Company and one of the parties in the 2010 Litigation granting such party a worldwide, perpetual, non-exclusive, non-sublicenseable license to the patents-in-suit and all other patents owned by, or exclusively licensed to, FI Delaware or its direct or indirect wholly-owned subsidiaries. The license is fully paid up unless the holder of the license has aggregate annual net sales to third party distributors or re-sellers in excess of $10.0 million (which has not been achieved to date). In exchange for such license, the third party issued 2,951,786 shares of its common stock (representing 3.765% of such party’s outstanding shares of common stock) (the “Settlement Investment”) with a fair value of $8.3 million on the date of the agreement and agreed to pay Finjan $3.0 million in cash, which was payable over an 18 month period in the form of three payments in the amount of $1.0 million each. On March 5, 2013, the Company issued a dividend to the Former Parent, which included its entire ownership of the Settlement Investment. The Company has received all the four installment payments, and recognized such amount as gain on settlements. The last installment payment of $1.0 million was received in January 2014.

OTHER INCOME

GAIN ON SETTLEMENTS

In July 2010, the Company filed a patent infringement lawsuit against five software technology companies (the “2010 Litigation”). The Company asserted that defendants had willfully infringed the Company’s U.S. patents and sought an injunction and damages for such infringement. In April 2012, a Memorandum of Understanding was signed between the Company and one of the parties in the 2010 Litigation granting such party a worldwide, perpetual, non-exclusive, non-sublicenseable license to the patents-in-suit and all other patents owned by, or exclusively licensed to, FI Delaware or its direct or indirect wholly-owned subsidiaries. The license is fully paid up unless the holder of the license has aggregate annual net sales to third party distributors or re-sellers in excess of $10.0 million (which has not been achieved to date). In exchange for such license, the third party issued 2,951,786 shares of its common stock (representing 3.765% of such party’s outstanding shares of common stock) (the “Settlement Investment”) with a fair value of $8.3 million on the date of the agreement and agreed to pay Finjan $3.0 million in cash, which was payable over an 18 month period in the form of three payments in the amount of $1.0 million each. On March 5, 2013, the Company issued a dividend to the Former Parent, which included its entire ownership of the Settlement Investment. The Company has received all the four installment payments, and recognized such amount as gain on settlements. The last installment payment of $1.0 million was received in January 2014.