Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($)	3 Months Ended		12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Accounting Policy [Line Items]
Income or loss per share	$ 714,711	$ 0
Unrecognized tax benefits	0	0
Accrued payment of interest and penalties	0	0
Income tax expense	238,269	$ 0
Estimated federal income tax payment	323,000
Income tax liability	220,145		$ 304,876
Final income tax liability	307,683
Tax overpayment	15,317
General and administrative expenses	168,267
Deferred general and administrative expenses	$ 358,301
Federal statutory income tax rate	21.00%		34.00%
Effective income tax rate	25.00%
Class A Common Stock [Member]
Accounting Policy [Line Items]
Common stock subject to redemption	36,098,425		36,026,954
Number of converted shares	18,941,651
Maximum [Member]
Accounting Policy [Line Items]
Federal Depository Insurance Coverage amount	$ 250,000