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Contingencies - Litigation (Details)	Sep. 14, 2018 number_patents Petition	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	Jun. 30, 2019 USD ($)
Loss Contingencies [Line Items]
Loss contingencies, patents allegedly infringed, number of inter partes review requested | Petition	2
Loss contingency accrual | $								$ 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		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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+ References

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- Definition

Amount of loss contingency liability.

+ 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=118942415&loc=d3e14326-108349

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