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Contingencies Litigation (Details)	Sep. 14, 2018 number_patents Petition	Mar. 30, 2018 number_patents	Feb. 28, 2018 number_patents	Sep. 15, 2017 number_patents	Mar. 08, 2017 number_patents	Feb. 24, 2017 number_patents	Aug. 25, 2016 number_patents	Jun. 06, 2016 number_patents	Mar. 31, 2019 USD ($)
Loss Contingencies [Line Items]
Loss contingencies, patents allegedly infringed, number of inter partes review requested | Petition	2
Loss contingency accrual | $									$ 0
Estimated litigation liability | $									$ 0
AgaMatrix
Loss Contingencies [Line Items]
Loss contingency, patents allegedly infringed, number								3
Loss contingencies, patents allegedly infringed, number of inter partes review requested	2
WaveForm Technologies, Inc.
Loss Contingencies [Line Items]
Loss contingency, patents allegedly infringed, number transferred to new plaintiff						3
Loss contingencies, patents allegedly infringed, number of inter partes review requested		2	2		3		2
AgaMatrix
Loss Contingencies [Line Items]
Gain contingency, patents allegedly infringed upon, number				2

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- Definition

Loss Contingencies, Patents Allegedly Infringed, Number of inter partes reviews requested

+ References

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Loss Contingency, Patents Allegedly Infringed, Number Transferred to New Plaintiff

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Number of entity's patents that another entity has allegedly infringed.

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- Definition

Aggregate carrying amount of the estimated litigation liability for known or estimated probable loss from litigation, which may include attorneys' fees and other litigation costs.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=82911808&loc=d3e14326-108349

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.25)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

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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Amount of loss contingency liability.

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-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=82911808&loc=d3e14326-108349

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