Summary of Significant Accounting and Reporting Policies and Recent Developments - Additional Information (Detail) - USD ($)	12 Months Ended
Dec. 31, 2019	Sep. 30, 2020	Jun. 11, 2020
Concentration Risk [Line Items]
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01	$ 0.01
Emerging growth company, threshold on market value of shares		$ 700,000,000.0
Emerging growth company, threshold on annual gross revenue		1,070,000,000.00
Emerging growth company, threshold on convertible debt issued		$ 1,000,000,000
One Customer \| Accounts Receivable \| Customer Concentration Risk
Concentration Risk [Line Items]
Concentration risk, percentage	22.00%

Emerging Growth Company, Threshold On Annual Gross Revenue

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Emerging Growth Company, Threshold On Convertible Debt Issued

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Emerging Growth Company, Threshold On Market Value Of Shares

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Face amount or stated value per share of common stock.

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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.

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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.

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