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Earnings (Loss) Per Share Attributable to Common Stockholders - Additional Information (Details)	Nov. 16, 2017 vote class
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Number of new classes of common stock authorized | class	2
Common stock, conversion ratio	1
IPO | Class A Common Stock
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Number of votes per share	1
IPO | Class B Common Stock
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Number of votes per share	10

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Common Stock, Number Of Classes Authorized

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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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