Minimum net tangible assets.

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Summary of significant accounting policy.

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- Definition

Amount of decrease in additional paid in capital (APIC) resulting from direct costs associated with issuing stock. Includes, but is not limited to, legal and accounting fees and direct costs associated with stock issues under a shelf registration.

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- Definition

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

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The amount of cash deposited in financial institutions as of the balance sheet date that is insured by the Federal Deposit Insurance Corporation.

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- Definition

Number of warrants or rights outstanding.

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- Definition

Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.

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Expense related to distribution, servicing and underwriting fees.

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- Definition

Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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The number of securities classified as temporary equity that have been sold (or granted) to the entity's shareholders. Securities issued include securities outstanding and securities held in treasury. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. If convertible, the issuer does not control the actions or events necessary to issue the maximum number of shares that could be required to be delivered under the conversion option if the holder exercises the option to convert the stock to another class of equity. If the security is a warrant or a rights issue, the warrant or rights issue is considered to be temporary equity if the issuer cannot demonstrate that it would be able to deliver upon the exercise of the option by the holder in all cases. Includes stock with put option held by ESOP and stock redeemable by holder only in the event of a change in control of the issuer.

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Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($)	3 Months Ended	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2018	Dec. 31, 2017
Summary Of Significant Accounting Policy [Line Items]
Minimum net tangible assets	$ 5,000,001	$ 5,000,001
Federal depository insurance coverage	250,000	250,000
Income tax expense	104,404	104,212
Custodian Bank [Member]
Summary Of Significant Accounting Policy [Line Items]
Deposits held	1,811,153	1,811,153
Goldman Sachs Financial Square Treasury Investments Fund [Member]
Summary Of Significant Accounting Policy [Line Items]
Deposits held	$ 690,000,000	$ 690,000,000
Common Class A [Member]
Summary Of Significant Accounting Policy [Line Items]
Common stock shares, issued	2,823,702	2,823,702	2,823,702
Shares subject to possible redemption	66,176,298	66,176,298
Common Class A [Member] \| IPO [Member]
Summary Of Significant Accounting Policy [Line Items]
Common stock shares, issued	69,000,000	69,000,000
Offering costs		$ 907,949
Underwriter discounts		$ 37,950,000
Common Class A [Member] \| Warrant [Member]
Summary Of Significant Accounting Policy [Line Items]
Shares excluded from the calculation of income per common share		0
Common Class A [Member] \| Warrant [Member] \| Maximum [Member]
Summary Of Significant Accounting Policy [Line Items]
Outstanding warrants to purchase of common stock	33,533,333	33,533,333