Accounting Standards and Significant Accounting Policies - Concentrations of Risk and Significant Customers (Details) - Customer Concentration Risk	3 Months Ended
Mar. 31, 2020
Anthem \| Total Revenue
Concentration Risk [Line Items]
Concentration risk, percentage	44.00%
Anthem \| Accounts Receivable
Concentration Risk [Line Items]
Concentration risk, percentage	28.00%
Two customers \| Accounts Receivable
Concentration Risk [Line Items]
Concentration risk, percentage	11.00%

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.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
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