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Summary of Significant Accounting Policies - Major Customers (Detail)	3 Months Ended
	Mar. 31, 2020 Customer
Customer Concentration Risk | Sales Revenue, Net
Summary Of Significant Accounting Policies [Line Items]
Number of major customers that each accounted for more than 10% of total revenues	5
Concentration risk, percentage	96.00%
Credit Concentration Risk | Accounts Receivable
Summary Of Significant Accounting Policies [Line Items]
Concentration risk, percentage	94.00%
Number of major customers that each accounted for more than 10% of total accounts receivable	5

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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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-Publisher FASB
-Name Accounting Standards Codification
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Summary Of Significant Accounting Policies [Line Items]

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