Commitments and Contingencies	6 Months Ended
Jun. 30, 2020
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingencies	5. Commitments and Contingencies Registration Rights The holders of Founder Shares, Private Placement Units (and component securities) and warrants that may be issued upon conversion of Working Capital Loans, if any, will be entitled to registration rights (in the case of the Founder Shares, only after conversion of such shares to shares of Class A common stock). The registration rights agreement was signed on December 12, 2018. These holders are entitled to certain demand and “piggyback” registration rights. However, the registration rights agreement provides that the Company will not permit any registration statement filed under the Securities Act to become effective until the termination of the applicable lock-up period for the securities to be registered. The Company will bear the expenses incurred in connection with the filing of any such registration statements. In connection with the Business Combination, the registration rights agreement is being amended to provide that GCM Pubco will register for resale certain shares of common stock and other equity securities that are held by the parties thereto from time to time. Underwriting Agreement Cantor Fitzgerald & Co., the underwriter of the Public Offering and an affiliate of the Sponsor, purchased approximately 3,260,000 additional Units to cover over-allotments, at the Public Offering price less the underwriting discounts and commissions. The underwriter was entitled to an underwriting discount of $0.20 per Unit, or $5,000,000 in the aggregate, even if the underwriter’s over-allotment was exercised in full. The underwriter has paid approximately $32,600,000 for 3,260,000 Units. The Company also engaged a qualified independent underwriter to participate in the preparation of the registration statement and exercise the usual standards of “due diligence” in respect thereto. The Company paid the independent underwriter a fee of $100,000 upon the completion of the Public Offering in consideration for its services and expenses as the qualified independent underwriter. The independent underwriter will receive no other compensation. The fee was charged directly to stockholders’ equity upon completion of the IPO. Business Combination Marketing Agreement and Additional Fees Payable to Affiliates The Company has engaged Cantor Fitzgerald & Co. as an advisor in connection with the Company’s initial Business Combination to assist the Company in holding meetings with its stockholders to discuss the potential Business Combination and the target business’ attributes, introduce the Company to potential investors that are interested in purchasing the Company’s securities, assist the Company in obtaining stockholder approval for the Business Combination and assist the Company with its press releases and public filings in connection with the Business Combination. The Company will pay Cantor Fitzgerald & Co. a cash fee for such services upon the consummation of the Business Combination in an amount equal to, in the aggregate, 3.5% of the gross proceeds of the Public Offering, including any proceeds from the partial exercise of the underwriters’ over-allotment option. In addition, upon completion of the Business Combination, and assuming no change in the amount of the PIPE Transaction (as defined in Note 8), an aggregate amount of approximately $7.8 million in advisory fees and placement agent fees will be payable to Cantor Fitzgerald & Co., an affiliate of ours and the Sponsor.

Commitments and Contingencies

6 Months Ended

Jun. 30, 2020

Commitments And Contingencies Disclosure [Abstract]

5. Commitments and Contingencies

Registration Rights

The holders of Founder Shares, Private Placement Units (and component securities) and warrants that may be issued upon conversion of Working Capital Loans, if any, will be entitled to registration rights (in the case of the Founder Shares, only after conversion of such shares to shares of Class A common stock). The registration rights agreement was signed on December 12, 2018. These holders are entitled to certain demand and “piggyback” registration rights. However, the registration rights agreement provides that the Company will not permit any registration statement filed under the Securities Act to become effective until the termination of the applicable lock-up period for the securities to be registered. The Company will bear the expenses incurred in connection with the filing of any such registration statements.

In connection with the Business Combination, the registration rights agreement is being amended to provide that GCM Pubco will register for resale certain shares of common stock and other equity securities that are held by the parties thereto from time to time.

Underwriting Agreement

Cantor Fitzgerald & Co., the underwriter of the Public Offering and an affiliate of the Sponsor, purchased approximately 3,260,000 additional Units to cover over-allotments, at the Public Offering price less the underwriting discounts and commissions.

The underwriter was entitled to an underwriting discount of $0.20 per Unit, or $5,000,000 in the aggregate, even if the underwriter’s over-allotment was exercised in full. The underwriter has paid approximately $32,600,000 for 3,260,000 Units.

The Company also engaged a qualified independent underwriter to participate in the preparation of the registration statement and exercise the usual standards of “due diligence” in respect thereto. The Company paid the independent underwriter a fee of $100,000 upon the completion of the Public Offering in consideration for its services and expenses as the qualified independent underwriter. The independent underwriter will receive no other compensation. The fee was charged directly to stockholders’ equity upon completion of the IPO.

Business Combination Marketing Agreement and Additional Fees Payable to Affiliates

The Company has engaged Cantor Fitzgerald & Co. as an advisor in connection with the Company’s initial Business Combination to assist the Company in holding meetings with its stockholders to discuss the potential Business Combination and the target business’ attributes, introduce the Company to potential investors that are interested in purchasing the Company’s securities, assist the Company in obtaining stockholder approval for the Business Combination and assist the Company with its press releases and public filings in connection with the Business Combination. The Company will pay Cantor Fitzgerald & Co. a cash fee for such services upon the consummation of the Business Combination in an amount equal to, in the aggregate, 3.5% of the gross proceeds of the Public Offering, including any proceeds from the partial exercise of the underwriters’ over-allotment option.

In addition, upon completion of the Business Combination, and assuming no change in the amount of the PIPE Transaction (as defined in Note 8), an aggregate amount of approximately $7.8 million in advisory fees and placement agent fees will be payable to Cantor Fitzgerald & Co., an affiliate of ours and the Sponsor.