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Selected Quarterly Financial Data (unaudited) - Schedule of Quarterly Financial Data (Detail) - USD ($)	3 Months Ended					8 Months Ended	12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2018	Dec. 31, 2017
Quarterly Operating Results Unaudited [Line Items]
General and administrative expenses	$ 660,801	$ 252,407	$ 122,900	$ 788	$ 1,276		$ 1,036,896	$ 1,276
Net income (loss)	$ 2,348,869	$ 2,296,093	$ 386,382	$ (596)	$ (1,276)	$ (303,418)	$ 5,030,748	$ (1,276)
Common Class A [Member]
Quarterly Operating Results Unaudited [Line Items]
Basic and diluted earning (loss) available to common stock	$ 0.03	$ 0.03	$ 0.00				$ 0.06
Common Class B [Member]
Quarterly Operating Results Unaudited [Line Items]
Basic and diluted earning (loss) available to common stock	$ 0.03	$ 0.03	$ 0.00	$ 0.00	$ 0.00	$ (0.02)	$ 0.06	$ 0.00

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The amount of net income or loss for the period per each share in instances when basic and diluted earnings per share are the same amount and reported as a single line item on the face of the financial statements. Basic earnings per share is the amount of net income or loss for the period per each share of common stock or unit outstanding during the reporting period. Diluted earnings per share includes the amount of net income or loss for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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The aggregate total of expenses of managing and administering the affairs of an entity, including affiliates of the reporting entity, which are not directly or indirectly associated with the manufacture, sale or creation of a product or product line.

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