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License Agreement, Fee Receivable Period

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For unclassified balance sheet, amounts due from customers or clients for goods or services that have been delivered or sold in the normal course of business.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Revenue earned during the period relating to consideration received from another party for the right to use, but not own, certain of the entity's intangible assets. Licensing arrangements include, but are not limited to, rights to use a patent, copyright, technology, manufacturing process, software or trademark. Licensing fees are generally, but not always, fixed as to amount and not dependent upon the revenue generated by the licensing party. An entity may receive licensing fees for licenses that also generate royalty payments to the entity.

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Cash received for the settlement of litigation during the current period.

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LICENSE, SETTLEMENT AND RELEASE AGREEMENT (Details) - Licensing Agreements - USD ($) $ in Thousands						3 Months Ended
	Mar. 19, 2018	Feb. 28, 2018	Feb. 01, 2018	Apr. 21, 2017	Mar. 31, 2017	Mar. 31, 2018	Mar. 31, 2019	Jan. 31, 2019	Dec. 31, 2017
Symantec Corp
Finite-Lived Intangible Assets [Line Items]
Proceeds from legal settlement	$ 65,000
Payment period		20 days
License revenue		$ 65,000
Payable period of agreement		4 years
EU Licensee
Finite-Lived Intangible Assets [Line Items]
Proceeds from legal settlement				$ 4,900
Payment period				10 days
License revenue			$ 1,300
Receivable related to license agreement			$ 1,300	$ 2,300
Cash received from license agreement						$ 2,300
EU Licensee \| Forecast
Finite-Lived Intangible Assets [Line Items]
Receivable related to license agreement								$ 1,300
Sophos Group
Finite-Lived Intangible Assets [Line Items]
License revenue					$ 15,000
Receivable related to license agreement						$ 2,500			$ 1,250
Cash received from license agreement					$ 15,000
Sophos Group \| Forecast
Finite-Lived Intangible Assets [Line Items]
Receivable related to license agreement							$ 1,250
Maximum \| Symantec Corp
Finite-Lived Intangible Assets [Line Items]
Additional license fees		$ 45,000