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Commitments and Contingencies - Arbitration and Litigation (Details) - Second Amended Demand for Arbitration, Vendor - claim	Jul. 31, 2019	Apr. 03, 2019
Loss Contingency, Quantities [Abstract]
Loss contingency, claims dismissed, number	2
Loss contingency, pending claims, number		4

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- Definition

Number of claims dismissed.

+ References

No definition available.

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- References

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X

- Definition

Number of pending claims pertaining to a loss contingency.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118942415&loc=d3e14435-108349

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