Stockholders' Equity - Additional Information (Detail) - $ / shares	3 Months Ended
	Mar. 31, 2019	Dec. 31, 2018	Jun. 30, 2018	Jun. 14, 2018	Jun. 11, 2018
Class of Stock [Line Items]
Common stock, voting rights	Holders of the Company's common stock are entitled to one vote for each share of common stock.
Preference stock, shares authorized	1,000,000	1,000,000
Preference stock, shares issued	0	0
Preference stock, shares outstanding	0	0
Closing price of common stock				$ 10.00
Common Class A [Member]
Class of Stock [Line Items]
Common stock, shares authorized	400,000,000	400,000,000			400,000,000
Common stock, shares issued	63,250,000
Common stock, shares outstanding	63,250,000
Common stock, shares issued	1,632,436	1,891,166
Common stock, shares outstanding	1,632,436	1,891,166
Temporary equity, shares subject to possible redemption outstanding	61,617,564	61,358,834
Common Class B [Member]
Class of Stock [Line Items]
Common stock, shares authorized	50,000,000	50,000,000			50,000,000
Common stock, shares issued	15,812,500	15,812,500
Common stock, shares outstanding	15,812,500	15,812,500
Stock dividend per share			$ 0.375
Dividend First [Member] | Common Class B [Member]
Class of Stock [Line Items]
Stock dividend per share			0.25
Dividend Second [Member] | Common Class B [Member]
Class of Stock [Line Items]
Stock dividend per share			$ 0.1
Public Warrants [Member]
Class of Stock [Line Items]
Warrants, description	The Public Warrants will become exercisable on the later of (a) 30 days after the completion of an Initial Business Combination or (b) 12 months from the closing of the Initial Public Offering; provided in each case that the Company has an effective registration statement under the Securities Act covering the Class A common stock issuable upon exercise of the Public Warrants and a current prospectus relating to them is available (or the Company permits holders to exercise their Public Warrants on a cashless basis and such cashless exercise is exempt from registration under the Securities Act).
Warrants expiration period	5 years
Price per warrants	$ 0.01
Redemption period of warrants	30 days
Closing price of common stock	$ 18.00
Private Placement [Member]
Class of Stock [Line Items]
Warrants, description	The Private Placement Warrants are identical to the Public Warrants underlying the Units sold in the Initial Public Offering, except that the Private Placement Warrants and the Class A common stock issuable upon exercise of the Private Placement Warrants will not be transferable, assignable or salable until 30 days after the completion of an Initial Business Combination, subject to certain limited exceptions.