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Operating Segments - Customers (Details) - customer	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Concentration risk
Number of customers	23	17	25	18
Customer Concentration risk
Concentration risk
Number of customers	4	3	2	3
Threshold concentration risk for reporting (as a percent)	10.00%	10.00%	10.00%	10.00%
Total Revenue | Customer Concentration risk | Customer One
Concentration risk
Concentration risk (as a percent)	15.00%	39.00%	35.00%	31.00%
Total Revenue | Customer Concentration risk | Customer Two
Concentration risk
Concentration risk (as a percent)	14.00%	28.00%	10.00%	21.00%
Total Revenue | Customer Concentration risk | Customer Three
Concentration risk
Concentration risk (as a percent)	13.00%	13.00%		21.00%
Total Revenue | Customer Concentration risk | Customer Four
Concentration risk
Concentration risk (as a percent)	11.00%

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- Definition

Represents the number customers of the entity from which revenue was earned.

+ References

No definition available.

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- Definition

Threshold concentration risk percentage for disclosure requirement.

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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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- Definition

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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