Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies -Additional information (Details)

v3.19.2
Commitments and Contingencies -Additional information (Details) - $ / shares
9 Months Ended 21 Months Ended
Jan. 09, 2018
Jun. 30, 2019
Jun. 30, 2019
Sep. 30, 2018
Dec. 12, 2017
Commitments And Contingencies [Line Items]          
Underwriters option period     45 days    
Sale price per unit   $ 10.00 $ 10.00 $ 10.00 $ 10.00
Paid an underwriting discount $ 0.20        
Business combination marketing agreement, advisors fee percentage description   Pursuant to that agreement, the Company will pay the Advisors a cash fee for such services upon the consummation of the Business Combination in an amount equal to, in the aggregate, (i) 3.5% of the gross proceeds of the Offering, excluding any proceeds from the full or partial exercise of the over-allotment option, plus (ii) 5.033333% of the gross proceeds of the Offering, if any, from the full or partial exercise of the over-allotment option (in each case, exclusive of any applicable finders’ fees which might become payable).      
Advisors fee on gross proceeds of offering excluding over-allotment option percentage   3.50% 3.50%    
Advisors fee on gross proceeds of offering including over-allotment option percentage   5.03333% 5.03333%    
Over-Allotment Option          
Commitments And Contingencies [Line Items]          
Number of additional shares granted     1,875,000    
Number of additional units purchased by underwriters 1,875,000        
Sale price per unit $ 10.00        
Paid an underwriting discount $ 0.0467