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Summary of Significant Accounting Policies (Narrative) (Details) - ASC 606 [Member]	3 Months Ended		9 Months Ended
	Sep. 30, 2020 USD ($)	Sep. 30, 2019	Sep. 30, 2020 USD ($) Segment	Sep. 30, 2019
Summary Of Significant Accounting Policies [Line Items]
Number of reporting segment | Segment			1
Percentage of service revenue that is recognized over a period of time against total revenue			0.00%
Deferred revenue | $	$ 0		$ 0
Customer Concentration Risk [Member] | Revenue Benchmark [Member]
Summary Of Significant Accounting Policies [Line Items]
Revenues Specific To One Customer	8.00%	11.00%	12.00%	12.00%

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- Definition

Percentage of service revenue that is recognized over a period of time against gross revenue.

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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

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Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable.

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Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

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