Commitments and Contingencies, Leases - Narrative (Details)	6 Months Ended
Jun. 30, 2019	Dec. 31, 2018
Lessee, Lease, Description [Line Items]
Operating Lease, Weighted Average Discount Rate, Percent	4.10%
Maximum lease term for short-term lease classification	12 months
WYCO
Lessee, Lease, Description [Line Items]
Ownership interest (as a percent)	50.00%	50.00%

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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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.

+ References

No definition available.

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- Definition

Weighted average discount rate for operating lease calculated at point in time.

+ References

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-Publisher FASB
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- Definition

Maximum lease term for short-term lease classification

+ References

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